]>
Commit | Line | Data |
---|---|---|
4ee9c684 | 1 | /* Backend function setup |
cfaf579d | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
3 | Free Software Foundation, Inc. | |
4ee9c684 | 4 | Contributed by Paul Brook |
5 | ||
c84b470d | 6 | This file is part of GCC. |
4ee9c684 | 7 | |
c84b470d | 8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 10 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 11 | version. |
4ee9c684 | 12 | |
c84b470d | 13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
4ee9c684 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
bdabe786 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 21 | |
22 | /* trans-decl.c -- Handling of backend function and variable decls, etc */ | |
23 | ||
24 | #include "config.h" | |
25 | #include "system.h" | |
26 | #include "coretypes.h" | |
27 | #include "tree.h" | |
28 | #include "tree-dump.h" | |
75a70cf9 | 29 | #include "gimple.h" |
4ee9c684 | 30 | #include "ggc.h" |
31 | #include "toplev.h" | |
32 | #include "tm.h" | |
0290e11b | 33 | #include "rtl.h" |
4ee9c684 | 34 | #include "target.h" |
35 | #include "function.h" | |
4ee9c684 | 36 | #include "flags.h" |
37 | #include "cgraph.h" | |
df4d540f | 38 | #include "debug.h" |
4ee9c684 | 39 | #include "gfortran.h" |
9579733e | 40 | #include "pointer-set.h" |
4ee9c684 | 41 | #include "trans.h" |
42 | #include "trans-types.h" | |
43 | #include "trans-array.h" | |
44 | #include "trans-const.h" | |
45 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
46 | #include "trans-stmt.h" | |
47 | ||
48 | #define MAX_LABEL_VALUE 99999 | |
49 | ||
50 | ||
51 | /* Holds the result of the function if no result variable specified. */ | |
52 | ||
53 | static GTY(()) tree current_fake_result_decl; | |
c750cc52 | 54 | static GTY(()) tree parent_fake_result_decl; |
4ee9c684 | 55 | |
56 | static GTY(()) tree current_function_return_label; | |
57 | ||
58 | ||
59 | /* Holds the variable DECLs for the current function. */ | |
60 | ||
d4163395 | 61 | static GTY(()) tree saved_function_decls; |
62 | static GTY(()) tree saved_parent_function_decls; | |
4ee9c684 | 63 | |
9579733e | 64 | static struct pointer_set_t *nonlocal_dummy_decl_pset; |
65 | static GTY(()) tree nonlocal_dummy_decls; | |
4ee9c684 | 66 | |
67 | /* The namespace of the module we're currently generating. Only used while | |
68 | outputting decls for module variables. Do not rely on this being set. */ | |
69 | ||
70 | static gfc_namespace *module_namespace; | |
71 | ||
72 | ||
73 | /* List of static constructor functions. */ | |
74 | ||
75 | tree gfc_static_ctors; | |
76 | ||
77 | ||
78 | /* Function declarations for builtin library functions. */ | |
79 | ||
4ee9c684 | 80 | tree gfor_fndecl_pause_numeric; |
81 | tree gfor_fndecl_pause_string; | |
82 | tree gfor_fndecl_stop_numeric; | |
83 | tree gfor_fndecl_stop_string; | |
4ee9c684 | 84 | tree gfor_fndecl_runtime_error; |
50ad5fa2 | 85 | tree gfor_fndecl_runtime_error_at; |
da6ffc6d | 86 | tree gfor_fndecl_runtime_warning_at; |
9915365e | 87 | tree gfor_fndecl_os_error; |
50ad5fa2 | 88 | tree gfor_fndecl_generate_error; |
7257a5d2 | 89 | tree gfor_fndecl_set_args; |
8c84a5de | 90 | tree gfor_fndecl_set_fpe; |
56c7c2d7 | 91 | tree gfor_fndecl_set_options; |
15774a8b | 92 | tree gfor_fndecl_set_convert; |
f23886ab | 93 | tree gfor_fndecl_set_record_marker; |
bbaaa7b1 | 94 | tree gfor_fndecl_set_max_subrecord_length; |
b902b078 | 95 | tree gfor_fndecl_ctime; |
96 | tree gfor_fndecl_fdate; | |
dbc97b88 | 97 | tree gfor_fndecl_ttynam; |
4ee9c684 | 98 | tree gfor_fndecl_in_pack; |
99 | tree gfor_fndecl_in_unpack; | |
100 | tree gfor_fndecl_associated; | |
101 | ||
102 | ||
103 | /* Math functions. Many other math functions are handled in | |
104 | trans-intrinsic.c. */ | |
105 | ||
920e54ef | 106 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
4ee9c684 | 107 | tree gfor_fndecl_math_ishftc4; |
108 | tree gfor_fndecl_math_ishftc8; | |
920e54ef | 109 | tree gfor_fndecl_math_ishftc16; |
4ee9c684 | 110 | |
111 | ||
112 | /* String functions. */ | |
113 | ||
4ee9c684 | 114 | tree gfor_fndecl_compare_string; |
115 | tree gfor_fndecl_concat_string; | |
116 | tree gfor_fndecl_string_len_trim; | |
117 | tree gfor_fndecl_string_index; | |
118 | tree gfor_fndecl_string_scan; | |
119 | tree gfor_fndecl_string_verify; | |
120 | tree gfor_fndecl_string_trim; | |
5fcc6ec2 | 121 | tree gfor_fndecl_string_minmax; |
4ee9c684 | 122 | tree gfor_fndecl_adjustl; |
123 | tree gfor_fndecl_adjustr; | |
b44437b9 | 124 | tree gfor_fndecl_select_string; |
40b806de | 125 | tree gfor_fndecl_compare_string_char4; |
126 | tree gfor_fndecl_concat_string_char4; | |
127 | tree gfor_fndecl_string_len_trim_char4; | |
128 | tree gfor_fndecl_string_index_char4; | |
129 | tree gfor_fndecl_string_scan_char4; | |
130 | tree gfor_fndecl_string_verify_char4; | |
131 | tree gfor_fndecl_string_trim_char4; | |
132 | tree gfor_fndecl_string_minmax_char4; | |
133 | tree gfor_fndecl_adjustl_char4; | |
134 | tree gfor_fndecl_adjustr_char4; | |
b44437b9 | 135 | tree gfor_fndecl_select_string_char4; |
136 | ||
137 | ||
138 | /* Conversion between character kinds. */ | |
139 | tree gfor_fndecl_convert_char1_to_char4; | |
140 | tree gfor_fndecl_convert_char4_to_char1; | |
4ee9c684 | 141 | |
142 | ||
143 | /* Other misc. runtime library functions. */ | |
144 | ||
145 | tree gfor_fndecl_size0; | |
146 | tree gfor_fndecl_size1; | |
9b057c29 | 147 | tree gfor_fndecl_iargc; |
70eb4f1a | 148 | tree gfor_fndecl_clz128; |
149 | tree gfor_fndecl_ctz128; | |
4ee9c684 | 150 | |
59e2a584 | 151 | /* Intrinsic functions implemented in Fortran. */ |
152 | tree gfor_fndecl_sc_kind; | |
4ee9c684 | 153 | tree gfor_fndecl_si_kind; |
154 | tree gfor_fndecl_sr_kind; | |
155 | ||
4e8e57b0 | 156 | /* BLAS gemm functions. */ |
157 | tree gfor_fndecl_sgemm; | |
158 | tree gfor_fndecl_dgemm; | |
159 | tree gfor_fndecl_cgemm; | |
160 | tree gfor_fndecl_zgemm; | |
161 | ||
4ee9c684 | 162 | |
163 | static void | |
164 | gfc_add_decl_to_parent_function (tree decl) | |
165 | { | |
22d678e8 | 166 | gcc_assert (decl); |
4ee9c684 | 167 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
168 | DECL_NONLOCAL (decl) = 1; | |
169 | TREE_CHAIN (decl) = saved_parent_function_decls; | |
170 | saved_parent_function_decls = decl; | |
171 | } | |
172 | ||
173 | void | |
174 | gfc_add_decl_to_function (tree decl) | |
175 | { | |
22d678e8 | 176 | gcc_assert (decl); |
4ee9c684 | 177 | TREE_USED (decl) = 1; |
178 | DECL_CONTEXT (decl) = current_function_decl; | |
179 | TREE_CHAIN (decl) = saved_function_decls; | |
180 | saved_function_decls = decl; | |
181 | } | |
182 | ||
183 | ||
b797d6d3 | 184 | /* Build a backend label declaration. Set TREE_USED for named labels. |
185 | The context of the label is always the current_function_decl. All | |
186 | labels are marked artificial. */ | |
4ee9c684 | 187 | |
188 | tree | |
189 | gfc_build_label_decl (tree label_id) | |
190 | { | |
191 | /* 2^32 temporaries should be enough. */ | |
192 | static unsigned int tmp_num = 1; | |
193 | tree label_decl; | |
194 | char *label_name; | |
195 | ||
196 | if (label_id == NULL_TREE) | |
197 | { | |
198 | /* Build an internal label name. */ | |
199 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
200 | label_id = get_identifier (label_name); | |
201 | } | |
202 | else | |
203 | label_name = NULL; | |
204 | ||
205 | /* Build the LABEL_DECL node. Labels have no type. */ | |
e60a6f7b | 206 | label_decl = build_decl (input_location, |
207 | LABEL_DECL, label_id, void_type_node); | |
4ee9c684 | 208 | DECL_CONTEXT (label_decl) = current_function_decl; |
209 | DECL_MODE (label_decl) = VOIDmode; | |
210 | ||
b797d6d3 | 211 | /* We always define the label as used, even if the original source |
212 | file never references the label. We don't want all kinds of | |
213 | spurious warnings for old-style Fortran code with too many | |
214 | labels. */ | |
215 | TREE_USED (label_decl) = 1; | |
4ee9c684 | 216 | |
b797d6d3 | 217 | DECL_ARTIFICIAL (label_decl) = 1; |
4ee9c684 | 218 | return label_decl; |
219 | } | |
220 | ||
221 | ||
222 | /* Returns the return label for the current function. */ | |
223 | ||
224 | tree | |
225 | gfc_get_return_label (void) | |
226 | { | |
227 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
228 | ||
229 | if (current_function_return_label) | |
230 | return current_function_return_label; | |
231 | ||
232 | sprintf (name, "__return_%s", | |
233 | IDENTIFIER_POINTER (DECL_NAME (current_function_decl))); | |
234 | ||
235 | current_function_return_label = | |
236 | gfc_build_label_decl (get_identifier (name)); | |
237 | ||
238 | DECL_ARTIFICIAL (current_function_return_label) = 1; | |
239 | ||
240 | return current_function_return_label; | |
241 | } | |
242 | ||
243 | ||
b31f705b | 244 | /* Set the backend source location of a decl. */ |
245 | ||
246 | void | |
247 | gfc_set_decl_location (tree decl, locus * loc) | |
248 | { | |
b31f705b | 249 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
b31f705b | 250 | } |
251 | ||
252 | ||
4ee9c684 | 253 | /* Return the backend label declaration for a given label structure, |
254 | or create it if it doesn't exist yet. */ | |
255 | ||
256 | tree | |
257 | gfc_get_label_decl (gfc_st_label * lp) | |
258 | { | |
4ee9c684 | 259 | if (lp->backend_decl) |
260 | return lp->backend_decl; | |
261 | else | |
262 | { | |
263 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
264 | tree label_decl; | |
265 | ||
266 | /* Validate the label declaration from the front end. */ | |
22d678e8 | 267 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
4ee9c684 | 268 | |
269 | /* Build a mangled name for the label. */ | |
270 | sprintf (label_name, "__label_%.6d", lp->value); | |
271 | ||
272 | /* Build the LABEL_DECL node. */ | |
273 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
274 | ||
275 | /* Tell the debugger where the label came from. */ | |
f888a3fb | 276 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
b31f705b | 277 | gfc_set_decl_location (label_decl, &lp->where); |
4ee9c684 | 278 | else |
279 | DECL_ARTIFICIAL (label_decl) = 1; | |
280 | ||
281 | /* Store the label in the label list and return the LABEL_DECL. */ | |
282 | lp->backend_decl = label_decl; | |
283 | return label_decl; | |
284 | } | |
285 | } | |
286 | ||
287 | ||
288 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
289 | ||
290 | static tree | |
291 | gfc_sym_identifier (gfc_symbol * sym) | |
292 | { | |
0509d0ee | 293 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
294 | return (get_identifier ("MAIN__")); | |
295 | else | |
296 | return (get_identifier (sym->name)); | |
4ee9c684 | 297 | } |
298 | ||
299 | ||
300 | /* Construct mangled name from symbol name. */ | |
301 | ||
302 | static tree | |
303 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
304 | { | |
305 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
306 | ||
c5d33754 | 307 | /* Prevent the mangling of identifiers that have an assigned |
308 | binding label (mainly those that are bind(c)). */ | |
309 | if (sym->attr.is_bind_c == 1 | |
310 | && sym->binding_label[0] != '\0') | |
311 | return get_identifier(sym->binding_label); | |
312 | ||
4f0fae8e | 313 | if (sym->module == NULL) |
4ee9c684 | 314 | return gfc_sym_identifier (sym); |
315 | else | |
316 | { | |
f08a3f6f | 317 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 318 | return get_identifier (name); |
319 | } | |
320 | } | |
321 | ||
322 | ||
323 | /* Construct mangled function name from symbol name. */ | |
324 | ||
325 | static tree | |
326 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
327 | { | |
328 | int has_underscore; | |
329 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
330 | ||
c5d33754 | 331 | /* It may be possible to simply use the binding label if it's |
332 | provided, and remove the other checks. Then we could use it | |
333 | for other things if we wished. */ | |
334 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
335 | sym->binding_label[0] != '\0') | |
336 | /* use the binding label rather than the mangled name */ | |
337 | return get_identifier (sym->binding_label); | |
338 | ||
4f0fae8e | 339 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
12441a18 | 340 | || (sym->module != NULL && (sym->attr.external |
341 | || sym->attr.if_source == IFSRC_IFBODY))) | |
4ee9c684 | 342 | { |
a2f97da7 | 343 | /* Main program is mangled into MAIN__. */ |
344 | if (sym->attr.is_main_program) | |
345 | return get_identifier ("MAIN__"); | |
346 | ||
347 | /* Intrinsic procedures are never mangled. */ | |
348 | if (sym->attr.proc == PROC_INTRINSIC) | |
4ee9c684 | 349 | return get_identifier (sym->name); |
350 | ||
351 | if (gfc_option.flag_underscoring) | |
352 | { | |
353 | has_underscore = strchr (sym->name, '_') != 0; | |
354 | if (gfc_option.flag_second_underscore && has_underscore) | |
355 | snprintf (name, sizeof name, "%s__", sym->name); | |
356 | else | |
357 | snprintf (name, sizeof name, "%s_", sym->name); | |
358 | return get_identifier (name); | |
359 | } | |
360 | else | |
361 | return get_identifier (sym->name); | |
362 | } | |
363 | else | |
364 | { | |
f08a3f6f | 365 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 366 | return get_identifier (name); |
367 | } | |
368 | } | |
369 | ||
370 | ||
5ed82495 | 371 | /* Returns true if a variable of specified size should go on the stack. */ |
372 | ||
373 | int | |
374 | gfc_can_put_var_on_stack (tree size) | |
375 | { | |
376 | unsigned HOST_WIDE_INT low; | |
377 | ||
378 | if (!INTEGER_CST_P (size)) | |
379 | return 0; | |
380 | ||
381 | if (gfc_option.flag_max_stack_var_size < 0) | |
382 | return 1; | |
383 | ||
384 | if (TREE_INT_CST_HIGH (size) != 0) | |
385 | return 0; | |
386 | ||
387 | low = TREE_INT_CST_LOW (size); | |
388 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
389 | return 0; | |
390 | ||
391 | /* TODO: Set a per-function stack size limit. */ | |
392 | ||
393 | return 1; | |
394 | } | |
395 | ||
396 | ||
b7bf3f81 | 397 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
398 | an expression involving its corresponding pointer. There are | |
399 | 2 cases; one for variable size arrays, and one for everything else, | |
400 | because variable-sized arrays require one fewer level of | |
401 | indirection. */ | |
402 | ||
403 | static void | |
404 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
405 | { | |
406 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
407 | tree value; | |
408 | ||
409 | /* Parameters need to be dereferenced. */ | |
410 | if (sym->cp_pointer->attr.dummy) | |
389dd41b | 411 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
412 | ptr_decl); | |
b7bf3f81 | 413 | |
414 | /* Check to see if we're dealing with a variable-sized array. */ | |
415 | if (sym->attr.dimension | |
416 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
417 | { | |
942043f8 | 418 | /* These decls will be dereferenced later, so we don't dereference |
b7bf3f81 | 419 | them here. */ |
420 | value = convert (TREE_TYPE (decl), ptr_decl); | |
421 | } | |
422 | else | |
423 | { | |
424 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
425 | ptr_decl); | |
389dd41b | 426 | value = build_fold_indirect_ref_loc (input_location, |
427 | ptr_decl); | |
b7bf3f81 | 428 | } |
429 | ||
430 | SET_DECL_VALUE_EXPR (decl, value); | |
431 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
764f1175 | 432 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b7bf3f81 | 433 | /* This is a fake variable just for debugging purposes. */ |
434 | TREE_ASM_WRITTEN (decl) = 1; | |
435 | } | |
436 | ||
437 | ||
b9c7fce7 | 438 | /* Finish processing of a declaration without an initial value. */ |
4ee9c684 | 439 | |
440 | static void | |
b9c7fce7 | 441 | gfc_finish_decl (tree decl) |
4ee9c684 | 442 | { |
b9c7fce7 | 443 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
444 | || DECL_INITIAL (decl) == NULL_TREE); | |
4ee9c684 | 445 | |
b9c7fce7 | 446 | if (TREE_CODE (decl) != VAR_DECL) |
447 | return; | |
4ee9c684 | 448 | |
b9c7fce7 | 449 | if (DECL_SIZE (decl) == NULL_TREE |
450 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
451 | layout_decl (decl, 0); | |
452 | ||
453 | /* A few consistency checks. */ | |
454 | /* A static variable with an incomplete type is an error if it is | |
455 | initialized. Also if it is not file scope. Otherwise, let it | |
456 | through, but if it is not `extern' then it may cause an error | |
457 | message later. */ | |
458 | /* An automatic variable with an incomplete type is an error. */ | |
459 | ||
460 | /* We should know the storage size. */ | |
461 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
462 | || (TREE_STATIC (decl) | |
463 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) | |
464 | : DECL_EXTERNAL (decl))); | |
465 | ||
466 | /* The storage size should be constant. */ | |
467 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
468 | || !DECL_SIZE (decl) | |
469 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
4ee9c684 | 470 | } |
471 | ||
472 | ||
473 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
474 | ||
475 | static void | |
476 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
477 | { | |
c1977dbe | 478 | tree new_type; |
f888a3fb | 479 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
4ee9c684 | 480 | This is the equivalent of the TARGET variables. |
481 | We also need to set this if the variable is passed by reference in a | |
482 | CALL statement. */ | |
b549d2a5 | 483 | |
b7bf3f81 | 484 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
b549d2a5 | 485 | if (sym->attr.cray_pointee) |
b7bf3f81 | 486 | gfc_finish_cray_pointee (decl, sym); |
b549d2a5 | 487 | |
4ee9c684 | 488 | if (sym->attr.target) |
489 | TREE_ADDRESSABLE (decl) = 1; | |
490 | /* If it wasn't used we wouldn't be getting it. */ | |
491 | TREE_USED (decl) = 1; | |
492 | ||
493 | /* Chain this decl to the pending declarations. Don't do pushdecl() | |
494 | because this would add them to the current scope rather than the | |
495 | function scope. */ | |
496 | if (current_function_decl != NULL_TREE) | |
497 | { | |
7af6a4af | 498 | if (sym->ns->proc_name->backend_decl == current_function_decl |
499 | || sym->result == sym) | |
4ee9c684 | 500 | gfc_add_decl_to_function (decl); |
501 | else | |
502 | gfc_add_decl_to_parent_function (decl); | |
503 | } | |
504 | ||
b7bf3f81 | 505 | if (sym->attr.cray_pointee) |
506 | return; | |
507 | ||
c5d33754 | 508 | if(sym->attr.is_bind_c == 1) |
509 | { | |
510 | /* We need to put variables that are bind(c) into the common | |
511 | segment of the object file, because this is what C would do. | |
512 | gfortran would typically put them in either the BSS or | |
513 | initialized data segments, and only mark them as common if | |
514 | they were part of common blocks. However, if they are not put | |
515 | into common space, then C cannot initialize global fortran | |
516 | variables that it interoperates with and the draft says that | |
517 | either Fortran or C should be able to initialize it (but not | |
518 | both, of course.) (J3/04-007, section 15.3). */ | |
519 | TREE_PUBLIC(decl) = 1; | |
520 | DECL_COMMON(decl) = 1; | |
521 | } | |
522 | ||
4ee9c684 | 523 | /* If a variable is USE associated, it's always external. */ |
524 | if (sym->attr.use_assoc) | |
525 | { | |
526 | DECL_EXTERNAL (decl) = 1; | |
527 | TREE_PUBLIC (decl) = 1; | |
528 | } | |
4f0fae8e | 529 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
4ee9c684 | 530 | { |
6b20224d | 531 | /* TODO: Don't set sym->module for result or dummy variables. */ |
7af6a4af | 532 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
4ee9c684 | 533 | /* This is the declaration of a module variable. */ |
534 | TREE_PUBLIC (decl) = 1; | |
535 | TREE_STATIC (decl) = 1; | |
536 | } | |
537 | ||
f0d4969f | 538 | /* Derived types are a bit peculiar because of the possibility of |
539 | a default initializer; this must be applied each time the variable | |
540 | comes into scope it therefore need not be static. These variables | |
541 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
69b1505f | 542 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
f0d4969f | 543 | SAVE_EXPLICIT. */ |
544 | if (!sym->attr.use_assoc | |
545 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
546 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
4ee9c684 | 547 | TREE_STATIC (decl) = 1; |
ef814c81 | 548 | |
549 | if (sym->attr.volatile_) | |
550 | { | |
ef814c81 | 551 | TREE_THIS_VOLATILE (decl) = 1; |
c1977dbe | 552 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
553 | TREE_TYPE (decl) = new_type; | |
ef814c81 | 554 | } |
555 | ||
4ee9c684 | 556 | /* Keep variables larger than max-stack-var-size off stack. */ |
557 | if (!sym->ns->proc_name->attr.recursive | |
558 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
a3f2c0e1 | 559 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
560 | /* Put variable length auto array pointers always into stack. */ | |
561 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
562 | || sym->attr.dimension == 0 | |
563 | || sym->as->type != AS_EXPLICIT | |
564 | || sym->attr.pointer | |
565 | || sym->attr.allocatable) | |
566 | && !DECL_ARTIFICIAL (decl)) | |
4ee9c684 | 567 | TREE_STATIC (decl) = 1; |
764f1175 | 568 | |
569 | /* Handle threadprivate variables. */ | |
9dda1f80 | 570 | if (sym->attr.threadprivate |
764f1175 | 571 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
572 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
4ee9c684 | 573 | } |
574 | ||
575 | ||
576 | /* Allocate the lang-specific part of a decl. */ | |
577 | ||
578 | void | |
579 | gfc_allocate_lang_decl (tree decl) | |
580 | { | |
581 | DECL_LANG_SPECIFIC (decl) = (struct lang_decl *) | |
582 | ggc_alloc_cleared (sizeof (struct lang_decl)); | |
583 | } | |
584 | ||
585 | /* Remember a symbol to generate initialization/cleanup code at function | |
586 | entry/exit. */ | |
587 | ||
588 | static void | |
589 | gfc_defer_symbol_init (gfc_symbol * sym) | |
590 | { | |
591 | gfc_symbol *p; | |
592 | gfc_symbol *last; | |
593 | gfc_symbol *head; | |
594 | ||
595 | /* Don't add a symbol twice. */ | |
596 | if (sym->tlink) | |
597 | return; | |
598 | ||
599 | last = head = sym->ns->proc_name; | |
600 | p = last->tlink; | |
601 | ||
602 | /* Make sure that setup code for dummy variables which are used in the | |
603 | setup of other variables is generated first. */ | |
604 | if (sym->attr.dummy) | |
605 | { | |
606 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
607 | This is a circular list, so don't go past the head. */ | |
608 | while (p != head | |
609 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
610 | { | |
611 | last = p; | |
612 | p = p->tlink; | |
613 | } | |
614 | } | |
615 | /* Insert in between last and p. */ | |
616 | last->tlink = sym; | |
617 | sym->tlink = p; | |
618 | } | |
619 | ||
620 | ||
621 | /* Create an array index type variable with function scope. */ | |
622 | ||
623 | static tree | |
624 | create_index_var (const char * pfx, int nest) | |
625 | { | |
626 | tree decl; | |
627 | ||
628 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
629 | if (nest) | |
630 | gfc_add_decl_to_parent_function (decl); | |
631 | else | |
632 | gfc_add_decl_to_function (decl); | |
633 | return decl; | |
634 | } | |
635 | ||
636 | ||
637 | /* Create variables to hold all the non-constant bits of info for a | |
638 | descriptorless array. Remember these in the lang-specific part of the | |
639 | type. */ | |
640 | ||
641 | static void | |
642 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
643 | { | |
644 | tree type; | |
645 | int dim; | |
646 | int nest; | |
647 | ||
648 | type = TREE_TYPE (decl); | |
649 | ||
650 | /* We just use the descriptor, if there is one. */ | |
651 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
652 | return; | |
653 | ||
22d678e8 | 654 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 655 | nest = (sym->ns->proc_name->backend_decl != current_function_decl) |
656 | && !sym->attr.contained; | |
657 | ||
658 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) | |
659 | { | |
660 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
86254bbf | 661 | { |
662 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
663 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
664 | } | |
9ca15c9b | 665 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
4ee9c684 | 666 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
667 | && (sym->as->type != AS_ASSUMED_SIZE | |
668 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
86254bbf | 669 | { |
670 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
671 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
672 | } | |
4ee9c684 | 673 | |
674 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
86254bbf | 675 | { |
676 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
677 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
678 | } | |
4ee9c684 | 679 | } |
680 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) | |
681 | { | |
682 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
683 | "offset"); | |
86254bbf | 684 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
685 | ||
4ee9c684 | 686 | if (nest) |
687 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
688 | else | |
689 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
690 | } | |
d4163395 | 691 | |
692 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
693 | && sym->as->type != AS_ASSUMED_SIZE) | |
86254bbf | 694 | { |
695 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
696 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
697 | } | |
d4163395 | 698 | |
699 | if (POINTER_TYPE_P (type)) | |
700 | { | |
701 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
702 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
703 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
704 | type = TREE_TYPE (type); | |
705 | } | |
706 | ||
707 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
708 | { | |
709 | tree size, range; | |
710 | ||
f75d6b8a | 711 | size = fold_build2 (MINUS_EXPR, gfc_array_index_type, |
712 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
d4163395 | 713 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
714 | size); | |
715 | TYPE_DOMAIN (type) = range; | |
716 | layout_type (type); | |
717 | } | |
6cf159a6 | 718 | |
6cf159a6 | 719 | if (TYPE_NAME (type) != NULL_TREE |
720 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
721 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
722 | { | |
723 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
724 | ||
725 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
726 | { | |
727 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
728 | gtype = TREE_TYPE (gtype); | |
729 | } | |
730 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
731 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
732 | TYPE_NAME (type) = NULL_TREE; | |
733 | } | |
734 | ||
735 | if (TYPE_NAME (type) == NULL_TREE) | |
736 | { | |
737 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
738 | ||
739 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
740 | { | |
741 | rtype = build_range_type (gfc_array_index_type, | |
742 | GFC_TYPE_ARRAY_LBOUND (type, dim), | |
743 | GFC_TYPE_ARRAY_UBOUND (type, dim)); | |
744 | gtype = build_array_type (gtype, rtype); | |
745 | /* Ensure the bound variables aren't optimized out at -O0. */ | |
746 | if (!optimize) | |
747 | { | |
748 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) | |
749 | && TREE_CODE (GFC_TYPE_ARRAY_LBOUND (type, dim)) == VAR_DECL) | |
750 | DECL_IGNORED_P (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 0; | |
751 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) | |
752 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, dim)) == VAR_DECL) | |
753 | DECL_IGNORED_P (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 0; | |
754 | } | |
755 | } | |
e60a6f7b | 756 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
757 | TYPE_DECL, NULL, gtype); | |
6cf159a6 | 758 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
759 | } | |
4ee9c684 | 760 | } |
761 | ||
762 | ||
763 | /* For some dummy arguments we don't use the actual argument directly. | |
5ed82495 | 764 | Instead we create a local decl and use that. This allows us to perform |
4ee9c684 | 765 | initialization, and construct full type information. */ |
766 | ||
767 | static tree | |
768 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
769 | { | |
770 | tree decl; | |
771 | tree type; | |
772 | gfc_array_spec *as; | |
773 | char *name; | |
3d8dea5a | 774 | gfc_packed packed; |
4ee9c684 | 775 | int n; |
776 | bool known_size; | |
777 | ||
778 | if (sym->attr.pointer || sym->attr.allocatable) | |
779 | return dummy; | |
780 | ||
781 | /* Add to list of variables if not a fake result variable. */ | |
782 | if (sym->attr.result || sym->attr.dummy) | |
783 | gfc_defer_symbol_init (sym); | |
784 | ||
785 | type = TREE_TYPE (dummy); | |
22d678e8 | 786 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
4ee9c684 | 787 | && POINTER_TYPE_P (type)); |
788 | ||
f888a3fb | 789 | /* Do we know the element size? */ |
4ee9c684 | 790 | known_size = sym->ts.type != BT_CHARACTER |
791 | || INTEGER_CST_P (sym->ts.cl->backend_decl); | |
792 | ||
793 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) | |
794 | { | |
795 | /* For descriptorless arrays with known element size the actual | |
796 | argument is sufficient. */ | |
22d678e8 | 797 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 798 | gfc_build_qualified_array (dummy, sym); |
799 | return dummy; | |
800 | } | |
801 | ||
802 | type = TREE_TYPE (type); | |
803 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
804 | { | |
cb8e3560 | 805 | /* Create a descriptorless array pointer. */ |
4ee9c684 | 806 | as = sym->as; |
3d8dea5a | 807 | packed = PACKED_NO; |
3d235846 | 808 | |
809 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
810 | are not repacked. */ | |
811 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
4ee9c684 | 812 | { |
813 | if (as->type == AS_ASSUMED_SIZE) | |
3d8dea5a | 814 | packed = PACKED_FULL; |
4ee9c684 | 815 | } |
816 | else | |
817 | { | |
818 | if (as->type == AS_EXPLICIT) | |
819 | { | |
3d8dea5a | 820 | packed = PACKED_FULL; |
4ee9c684 | 821 | for (n = 0; n < as->rank; n++) |
822 | { | |
823 | if (!(as->upper[n] | |
824 | && as->lower[n] | |
825 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
826 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
3d8dea5a | 827 | packed = PACKED_PARTIAL; |
4ee9c684 | 828 | } |
829 | } | |
830 | else | |
3d8dea5a | 831 | packed = PACKED_PARTIAL; |
4ee9c684 | 832 | } |
833 | ||
834 | type = gfc_typenode_for_spec (&sym->ts); | |
835 | type = gfc_get_nodesc_array_type (type, sym->as, packed); | |
836 | } | |
837 | else | |
838 | { | |
839 | /* We now have an expression for the element size, so create a fully | |
840 | qualified type. Reset sym->backend decl or this will just return the | |
841 | old type. */ | |
d95efb59 | 842 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
4ee9c684 | 843 | sym->backend_decl = NULL_TREE; |
844 | type = gfc_sym_type (sym); | |
3d8dea5a | 845 | packed = PACKED_FULL; |
4ee9c684 | 846 | } |
847 | ||
848 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
e60a6f7b | 849 | decl = build_decl (input_location, |
850 | VAR_DECL, get_identifier (name), type); | |
4ee9c684 | 851 | |
852 | DECL_ARTIFICIAL (decl) = 1; | |
853 | TREE_PUBLIC (decl) = 0; | |
854 | TREE_STATIC (decl) = 0; | |
855 | DECL_EXTERNAL (decl) = 0; | |
856 | ||
857 | /* We should never get deferred shape arrays here. We used to because of | |
858 | frontend bugs. */ | |
22d678e8 | 859 | gcc_assert (sym->as->type != AS_DEFERRED); |
4ee9c684 | 860 | |
3d8dea5a | 861 | if (packed == PACKED_PARTIAL) |
862 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
863 | else if (packed == PACKED_FULL) | |
864 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4ee9c684 | 865 | |
866 | gfc_build_qualified_array (decl, sym); | |
867 | ||
868 | if (DECL_LANG_SPECIFIC (dummy)) | |
869 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
870 | else | |
871 | gfc_allocate_lang_decl (decl); | |
872 | ||
873 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
874 | ||
875 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
876 | || sym->attr.contained) | |
877 | gfc_add_decl_to_function (decl); | |
878 | else | |
879 | gfc_add_decl_to_parent_function (decl); | |
880 | ||
881 | return decl; | |
882 | } | |
883 | ||
9579733e | 884 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
885 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
886 | pointing to the artificial variable for debug info purposes. */ | |
887 | ||
888 | static void | |
889 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
890 | { | |
891 | tree decl, dummy; | |
892 | ||
893 | if (! nonlocal_dummy_decl_pset) | |
894 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
895 | ||
896 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
897 | return; | |
898 | ||
899 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
e60a6f7b | 900 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
9579733e | 901 | TREE_TYPE (sym->backend_decl)); |
902 | DECL_ARTIFICIAL (decl) = 0; | |
903 | TREE_USED (decl) = 1; | |
904 | TREE_PUBLIC (decl) = 0; | |
905 | TREE_STATIC (decl) = 0; | |
906 | DECL_EXTERNAL (decl) = 0; | |
907 | if (DECL_BY_REFERENCE (dummy)) | |
908 | DECL_BY_REFERENCE (decl) = 1; | |
909 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
910 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
911 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
912 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
913 | TREE_CHAIN (decl) = nonlocal_dummy_decls; | |
914 | nonlocal_dummy_decls = decl; | |
915 | } | |
4ee9c684 | 916 | |
917 | /* Return a constant or a variable to use as a string length. Does not | |
918 | add the decl to the current scope. */ | |
919 | ||
920 | static tree | |
921 | gfc_create_string_length (gfc_symbol * sym) | |
922 | { | |
22d678e8 | 923 | gcc_assert (sym->ts.cl); |
4ee9c684 | 924 | gfc_conv_const_charlen (sym->ts.cl); |
a4abf8a0 | 925 | |
4ee9c684 | 926 | if (sym->ts.cl->backend_decl == NULL_TREE) |
927 | { | |
a4abf8a0 | 928 | tree length; |
4ee9c684 | 929 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; |
930 | ||
931 | /* Also prefix the mangled name. */ | |
932 | strcpy (&name[1], sym->name); | |
933 | name[0] = '.'; | |
e60a6f7b | 934 | length = build_decl (input_location, |
935 | VAR_DECL, get_identifier (name), | |
9ad09405 | 936 | gfc_charlen_type_node); |
4ee9c684 | 937 | DECL_ARTIFICIAL (length) = 1; |
938 | TREE_USED (length) = 1; | |
d4163395 | 939 | if (sym->ns->proc_name->tlink != NULL) |
940 | gfc_defer_symbol_init (sym); | |
a4abf8a0 | 941 | |
4ee9c684 | 942 | sym->ts.cl->backend_decl = length; |
943 | } | |
944 | ||
a4abf8a0 | 945 | gcc_assert (sym->ts.cl->backend_decl != NULL_TREE); |
4ee9c684 | 946 | return sym->ts.cl->backend_decl; |
947 | } | |
948 | ||
c8f1568f | 949 | /* If a variable is assigned a label, we add another two auxiliary |
950 | variables. */ | |
951 | ||
952 | static void | |
953 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
954 | { | |
955 | tree addr; | |
956 | tree length; | |
957 | tree decl; | |
958 | ||
959 | gcc_assert (sym->backend_decl); | |
960 | ||
961 | decl = sym->backend_decl; | |
962 | gfc_allocate_lang_decl (decl); | |
963 | GFC_DECL_ASSIGN (decl) = 1; | |
e60a6f7b | 964 | length = build_decl (input_location, |
965 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 966 | gfc_charlen_type_node); |
e60a6f7b | 967 | addr = build_decl (input_location, |
968 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 969 | pvoid_type_node); |
970 | gfc_finish_var_decl (length, sym); | |
971 | gfc_finish_var_decl (addr, sym); | |
972 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
973 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
974 | target label's address. Otherwise, value is the length of a format string | |
975 | and ASSIGN_ADDR is its address. */ | |
976 | if (TREE_STATIC (length)) | |
977 | DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2); | |
978 | else | |
979 | gfc_defer_symbol_init (sym); | |
980 | ||
981 | GFC_DECL_STRING_LEN (decl) = length; | |
982 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
983 | } | |
4ee9c684 | 984 | |
36b0a1b0 | 985 | |
986 | static tree | |
987 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
988 | { | |
989 | unsigned id; | |
990 | tree attr; | |
991 | ||
992 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
993 | if (sym_attr.ext_attr & (1 << id)) | |
994 | { | |
995 | attr = build_tree_list ( | |
996 | get_identifier (ext_attr_list[id].middle_end_name), | |
997 | NULL_TREE); | |
998 | list = chainon (list, attr); | |
999 | } | |
1000 | ||
1001 | return list; | |
1002 | } | |
1003 | ||
1004 | ||
4ee9c684 | 1005 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1006 | exist. */ | |
1007 | ||
1008 | tree | |
1009 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1010 | { | |
1011 | tree decl; | |
1012 | tree length = NULL_TREE; | |
36b0a1b0 | 1013 | tree attributes; |
4ee9c684 | 1014 | int byref; |
1015 | ||
0b5dc8b5 | 1016 | gcc_assert (sym->attr.referenced |
d0f6ad22 | 1017 | || sym->attr.use_assoc |
1018 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY); | |
4ee9c684 | 1019 | |
ff70e443 | 1020 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
4ee9c684 | 1021 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1022 | else | |
1023 | byref = 0; | |
1024 | ||
1025 | if ((sym->attr.dummy && ! sym->attr.function) || (sym->attr.result && byref)) | |
1026 | { | |
1027 | /* Return via extra parameter. */ | |
1028 | if (sym->attr.result && byref | |
1029 | && !sym->backend_decl) | |
1030 | { | |
1031 | sym->backend_decl = | |
1032 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
c6871095 | 1033 | /* For entry master function skip over the __entry |
1034 | argument. */ | |
1035 | if (sym->ns->proc_name->attr.entry_master) | |
1036 | sym->backend_decl = TREE_CHAIN (sym->backend_decl); | |
4ee9c684 | 1037 | } |
1038 | ||
1039 | /* Dummy variables should already have been created. */ | |
22d678e8 | 1040 | gcc_assert (sym->backend_decl); |
4ee9c684 | 1041 | |
1042 | /* Create a character length variable. */ | |
1043 | if (sym->ts.type == BT_CHARACTER) | |
1044 | { | |
1045 | if (sym->ts.cl->backend_decl == NULL_TREE) | |
d4163395 | 1046 | length = gfc_create_string_length (sym); |
1047 | else | |
1048 | length = sym->ts.cl->backend_decl; | |
1049 | if (TREE_CODE (length) == VAR_DECL | |
1050 | && DECL_CONTEXT (length) == NULL_TREE) | |
4ee9c684 | 1051 | { |
d95efb59 | 1052 | /* Add the string length to the same context as the symbol. */ |
1053 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1054 | gfc_add_decl_to_function (length); | |
1055 | else | |
1056 | gfc_add_decl_to_parent_function (length); | |
1057 | ||
1058 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1059 | DECL_CONTEXT (length)); | |
1060 | ||
d4163395 | 1061 | gfc_defer_symbol_init (sym); |
e8ff3944 | 1062 | } |
4ee9c684 | 1063 | } |
1064 | ||
1065 | /* Use a copy of the descriptor for dummy arrays. */ | |
1066 | if (sym->attr.dimension && !TREE_USED (sym->backend_decl)) | |
1067 | { | |
d95efb59 | 1068 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1069 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1070 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1071 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1072 | sym->backend_decl = decl; | |
4ee9c684 | 1073 | } |
1074 | ||
1075 | TREE_USED (sym->backend_decl) = 1; | |
c8f1568f | 1076 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1077 | { | |
1078 | gfc_add_assign_aux_vars (sym); | |
1079 | } | |
9579733e | 1080 | |
1081 | if (sym->attr.dimension | |
1082 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1083 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1084 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1085 | gfc_nonlocal_dummy_array_decl (sym); | |
1086 | ||
4ee9c684 | 1087 | return sym->backend_decl; |
1088 | } | |
1089 | ||
1090 | if (sym->backend_decl) | |
1091 | return sym->backend_decl; | |
1092 | ||
7251ca54 | 1093 | /* Catch function declarations. Only used for actual parameters and |
1094 | procedure pointers. */ | |
4ee9c684 | 1095 | if (sym->attr.flavor == FL_PROCEDURE) |
1096 | { | |
1097 | decl = gfc_get_extern_function_decl (sym); | |
7251ca54 | 1098 | gfc_set_decl_location (decl, &sym->declared_at); |
4ee9c684 | 1099 | return decl; |
1100 | } | |
1101 | ||
1102 | if (sym->attr.intrinsic) | |
1103 | internal_error ("intrinsic variable which isn't a procedure"); | |
1104 | ||
1105 | /* Create string length decl first so that they can be used in the | |
1106 | type declaration. */ | |
1107 | if (sym->ts.type == BT_CHARACTER) | |
1108 | length = gfc_create_string_length (sym); | |
1109 | ||
1110 | /* Create the decl for the variable. */ | |
e60a6f7b | 1111 | decl = build_decl (sym->declared_at.lb->location, |
1112 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
b31f705b | 1113 | |
f888a3fb | 1114 | /* Symbols from modules should have their assembler names mangled. |
4ee9c684 | 1115 | This is done here rather than in gfc_finish_var_decl because it |
1116 | is different for string length variables. */ | |
4f0fae8e | 1117 | if (sym->module) |
df4d540f | 1118 | { |
1119 | SET_DECL_ASSEMBLER_NAME (decl, gfc_sym_mangled_identifier (sym)); | |
1120 | if (sym->attr.use_assoc) | |
1121 | DECL_IGNORED_P (decl) = 1; | |
1122 | } | |
4ee9c684 | 1123 | |
1124 | if (sym->attr.dimension) | |
1125 | { | |
1126 | /* Create variables to hold the non-constant bits of array info. */ | |
1127 | gfc_build_qualified_array (decl, sym); | |
1128 | ||
1129 | /* Remember this variable for allocation/cleanup. */ | |
1130 | gfc_defer_symbol_init (sym); | |
1131 | ||
1132 | if ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer) | |
1133 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
1134 | } | |
1135 | ||
2294b616 | 1136 | if (sym->ts.type == BT_DERIVED && sym->ts.derived->attr.alloc_comp) |
1137 | gfc_defer_symbol_init (sym); | |
f0d4969f | 1138 | /* This applies a derived type default initializer. */ |
1139 | else if (sym->ts.type == BT_DERIVED | |
1140 | && sym->attr.save == SAVE_NONE | |
1141 | && !sym->attr.data | |
1142 | && !sym->attr.allocatable | |
1143 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
1144 | && !sym->attr.use_assoc) | |
1145 | gfc_defer_symbol_init (sym); | |
2294b616 | 1146 | |
4ee9c684 | 1147 | gfc_finish_var_decl (decl, sym); |
1148 | ||
bda1f152 | 1149 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 1150 | { |
4ee9c684 | 1151 | /* Character variables need special handling. */ |
1152 | gfc_allocate_lang_decl (decl); | |
1153 | ||
bda1f152 | 1154 | if (TREE_CODE (length) != INTEGER_CST) |
4ee9c684 | 1155 | { |
1156 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; | |
1157 | ||
4f0fae8e | 1158 | if (sym->module) |
4ee9c684 | 1159 | { |
1160 | /* Also prefix the mangled name for symbols from modules. */ | |
1161 | strcpy (&name[1], sym->name); | |
1162 | name[0] = '.'; | |
1163 | strcpy (&name[1], | |
1164 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (length))); | |
1165 | SET_DECL_ASSEMBLER_NAME (decl, get_identifier (name)); | |
1166 | } | |
1167 | gfc_finish_var_decl (length, sym); | |
22d678e8 | 1168 | gcc_assert (!sym->value); |
4ee9c684 | 1169 | } |
4ee9c684 | 1170 | } |
1033248c | 1171 | else if (sym->attr.subref_array_pointer) |
1172 | { | |
1173 | /* We need the span for these beasts. */ | |
1174 | gfc_allocate_lang_decl (decl); | |
1175 | } | |
1176 | ||
1177 | if (sym->attr.subref_array_pointer) | |
1178 | { | |
1179 | tree span; | |
1180 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
e60a6f7b | 1181 | span = build_decl (input_location, |
1182 | VAR_DECL, create_tmp_var_name ("span"), | |
1033248c | 1183 | gfc_array_index_type); |
1184 | gfc_finish_var_decl (span, sym); | |
6180d82a | 1185 | TREE_STATIC (span) = TREE_STATIC (decl); |
1186 | DECL_ARTIFICIAL (span) = 1; | |
1187 | DECL_INITIAL (span) = build_int_cst (gfc_array_index_type, 0); | |
1033248c | 1188 | |
1189 | GFC_DECL_SPAN (decl) = span; | |
6180d82a | 1190 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1033248c | 1191 | } |
1192 | ||
4ee9c684 | 1193 | sym->backend_decl = decl; |
1194 | ||
c8f1568f | 1195 | if (sym->attr.assign) |
21ebda4d | 1196 | gfc_add_assign_aux_vars (sym); |
c8f1568f | 1197 | |
bda1f152 | 1198 | if (TREE_STATIC (decl) && !sym->attr.use_assoc) |
1199 | { | |
1200 | /* Add static initializer. */ | |
1201 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1202 | TREE_TYPE (decl), sym->attr.dimension, | |
1203 | sym->attr.pointer || sym->attr.allocatable); | |
1204 | } | |
1205 | ||
9579733e | 1206 | if (!TREE_STATIC (decl) |
1207 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1208 | && !sym->attr.pointer | |
1209 | && !sym->attr.allocatable | |
1210 | && !sym->attr.proc_pointer) | |
1211 | DECL_BY_REFERENCE (decl) = 1; | |
1212 | ||
36b0a1b0 | 1213 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1214 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1215 | decl_attributes (&decl, attributes, 0); | |
1216 | ||
4ee9c684 | 1217 | return decl; |
1218 | } | |
1219 | ||
1220 | ||
dbe60343 | 1221 | /* Substitute a temporary variable in place of the real one. */ |
1222 | ||
1223 | void | |
1224 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1225 | { | |
1226 | save->attr = sym->attr; | |
1227 | save->decl = sym->backend_decl; | |
1228 | ||
1229 | gfc_clear_attr (&sym->attr); | |
1230 | sym->attr.referenced = 1; | |
1231 | sym->attr.flavor = FL_VARIABLE; | |
1232 | ||
1233 | sym->backend_decl = decl; | |
1234 | } | |
1235 | ||
1236 | ||
1237 | /* Restore the original variable. */ | |
1238 | ||
1239 | void | |
1240 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1241 | { | |
1242 | sym->attr = save->attr; | |
1243 | sym->backend_decl = save->decl; | |
1244 | } | |
1245 | ||
1246 | ||
cad0ddcf | 1247 | /* Declare a procedure pointer. */ |
1248 | ||
1249 | static tree | |
1250 | get_proc_pointer_decl (gfc_symbol *sym) | |
1251 | { | |
1252 | tree decl; | |
36b0a1b0 | 1253 | tree attributes; |
cad0ddcf | 1254 | |
1255 | decl = sym->backend_decl; | |
1256 | if (decl) | |
1257 | return decl; | |
1258 | ||
e60a6f7b | 1259 | decl = build_decl (input_location, |
1260 | VAR_DECL, get_identifier (sym->name), | |
cad0ddcf | 1261 | build_pointer_type (gfc_get_function_type (sym))); |
1262 | ||
e72f979a | 1263 | if ((sym->ns->proc_name |
1264 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
cad0ddcf | 1265 | || sym->attr.contained) |
1266 | gfc_add_decl_to_function (decl); | |
cf269acc | 1267 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
cad0ddcf | 1268 | gfc_add_decl_to_parent_function (decl); |
1269 | ||
1270 | sym->backend_decl = decl; | |
1271 | ||
cf269acc | 1272 | /* If a variable is USE associated, it's always external. */ |
1273 | if (sym->attr.use_assoc) | |
1274 | { | |
1275 | DECL_EXTERNAL (decl) = 1; | |
1276 | TREE_PUBLIC (decl) = 1; | |
1277 | } | |
1278 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1279 | { | |
1280 | /* This is the declaration of a module variable. */ | |
1281 | TREE_PUBLIC (decl) = 1; | |
1282 | TREE_STATIC (decl) = 1; | |
1283 | } | |
1284 | ||
cad0ddcf | 1285 | if (!sym->attr.use_assoc |
1286 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1287 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1288 | TREE_STATIC (decl) = 1; | |
1289 | ||
1290 | if (TREE_STATIC (decl) && sym->value) | |
1291 | { | |
1292 | /* Add static initializer. */ | |
1293 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1294 | TREE_TYPE (decl), sym->attr.dimension, sym->attr.proc_pointer); | |
1295 | } | |
1296 | ||
36b0a1b0 | 1297 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1298 | decl_attributes (&decl, attributes, 0); | |
1299 | ||
cad0ddcf | 1300 | return decl; |
1301 | } | |
1302 | ||
1303 | ||
4ee9c684 | 1304 | /* Get a basic decl for an external function. */ |
1305 | ||
1306 | tree | |
1307 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1308 | { | |
1309 | tree type; | |
1310 | tree fndecl; | |
36b0a1b0 | 1311 | tree attributes; |
4ee9c684 | 1312 | gfc_expr e; |
1313 | gfc_intrinsic_sym *isym; | |
1314 | gfc_expr argexpr; | |
17000b91 | 1315 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
4ee9c684 | 1316 | tree name; |
1317 | tree mangled_name; | |
83aeedb9 | 1318 | gfc_gsymbol *gsym; |
4ee9c684 | 1319 | |
1320 | if (sym->backend_decl) | |
1321 | return sym->backend_decl; | |
1322 | ||
1b716045 | 1323 | /* We should never be creating external decls for alternate entry points. |
1324 | The procedure may be an alternate entry point, but we don't want/need | |
1325 | to know that. */ | |
22d678e8 | 1326 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
1b716045 | 1327 | |
cad0ddcf | 1328 | if (sym->attr.proc_pointer) |
1329 | return get_proc_pointer_decl (sym); | |
1330 | ||
83aeedb9 | 1331 | /* See if this is an external procedure from the same file. If so, |
1332 | return the backend_decl. */ | |
1333 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name); | |
1334 | ||
1335 | if (gfc_option.flag_whole_file | |
1336 | && !sym->backend_decl | |
1337 | && gsym && gsym->ns | |
1338 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1339 | && gsym->ns->proc_name->backend_decl) | |
1340 | { | |
1341 | /* If the namespace has entries, the proc_name is the | |
1342 | entry master. Find the entry and use its backend_decl. | |
1343 | otherwise, use the proc_name backend_decl. */ | |
1344 | if (gsym->ns->entries) | |
1345 | { | |
1346 | gfc_entry_list *entry = gsym->ns->entries; | |
1347 | ||
1348 | for (; entry; entry = entry->next) | |
1349 | { | |
1350 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1351 | { | |
1352 | sym->backend_decl = entry->sym->backend_decl; | |
1353 | break; | |
1354 | } | |
1355 | } | |
1356 | } | |
1357 | else | |
1358 | { | |
1359 | sym->backend_decl = gsym->ns->proc_name->backend_decl; | |
1360 | } | |
1361 | ||
1362 | if (sym->backend_decl) | |
1363 | return sym->backend_decl; | |
1364 | } | |
1365 | ||
4ee9c684 | 1366 | if (sym->attr.intrinsic) |
1367 | { | |
1368 | /* Call the resolution function to get the actual name. This is | |
1369 | a nasty hack which relies on the resolution functions only looking | |
1370 | at the first argument. We pass NULL for the second argument | |
1371 | otherwise things like AINT get confused. */ | |
1372 | isym = gfc_find_function (sym->name); | |
22d678e8 | 1373 | gcc_assert (isym->resolve.f0 != NULL); |
4ee9c684 | 1374 | |
1375 | memset (&e, 0, sizeof (e)); | |
1376 | e.expr_type = EXPR_FUNCTION; | |
1377 | ||
1378 | memset (&argexpr, 0, sizeof (argexpr)); | |
22d678e8 | 1379 | gcc_assert (isym->formal); |
4ee9c684 | 1380 | argexpr.ts = isym->formal->ts; |
1381 | ||
1382 | if (isym->formal->next == NULL) | |
1383 | isym->resolve.f1 (&e, &argexpr); | |
1384 | else | |
1385 | { | |
37e0271a | 1386 | if (isym->formal->next->next == NULL) |
1387 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1388 | else | |
1389 | { | |
7fe55cc9 | 1390 | if (isym->formal->next->next->next == NULL) |
1391 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1392 | else | |
1393 | { | |
1394 | /* All specific intrinsics take less than 5 arguments. */ | |
1395 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1396 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1397 | } | |
37e0271a | 1398 | } |
4ee9c684 | 1399 | } |
bdaed7d2 | 1400 | |
1401 | if (gfc_option.flag_f2c | |
1402 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1403 | || e.ts.type == BT_COMPLEX)) | |
1404 | { | |
1405 | /* Specific which needs a different implementation if f2c | |
1406 | calling conventions are used. */ | |
17000b91 | 1407 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
bdaed7d2 | 1408 | } |
1409 | else | |
17000b91 | 1410 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
bdaed7d2 | 1411 | |
4ee9c684 | 1412 | name = get_identifier (s); |
1413 | mangled_name = name; | |
1414 | } | |
1415 | else | |
1416 | { | |
1417 | name = gfc_sym_identifier (sym); | |
1418 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1419 | } | |
1420 | ||
1421 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1422 | fndecl = build_decl (input_location, |
1423 | FUNCTION_DECL, name, type); | |
4ee9c684 | 1424 | |
1425 | SET_DECL_ASSEMBLER_NAME (fndecl, mangled_name); | |
4ee9c684 | 1426 | |
1427 | /* Set the context of this decl. */ | |
1428 | if (0 && sym->ns && sym->ns->proc_name) | |
1429 | { | |
1430 | /* TODO: Add external decls to the appropriate scope. */ | |
1431 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1432 | } | |
1433 | else | |
1434 | { | |
f888a3fb | 1435 | /* Global declaration, e.g. intrinsic subroutine. */ |
4ee9c684 | 1436 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1437 | } | |
1438 | ||
1439 | DECL_EXTERNAL (fndecl) = 1; | |
1440 | ||
f888a3fb | 1441 | /* This specifies if a function is globally addressable, i.e. it is |
4ee9c684 | 1442 | the opposite of declaring static in C. */ |
1443 | TREE_PUBLIC (fndecl) = 1; | |
1444 | ||
1445 | /* Set attributes for PURE functions. A call to PURE function in the | |
1446 | Fortran 95 sense is both pure and without side effects in the C | |
1447 | sense. */ | |
1448 | if (sym->attr.pure || sym->attr.elemental) | |
1449 | { | |
4d4b9f0e | 1450 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1451 | DECL_PURE_P (fndecl) = 1; |
be393645 | 1452 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1453 | parameters and don't use alternate returns (is this | |
1454 | allowed?). In that case, calls to them are meaningless, and | |
1b716045 | 1455 | can be optimized away. See also in build_function_decl(). */ |
be393645 | 1456 | TREE_SIDE_EFFECTS (fndecl) = 0; |
4ee9c684 | 1457 | } |
1458 | ||
6e27d773 | 1459 | /* Mark non-returning functions. */ |
1460 | if (sym->attr.noreturn) | |
1461 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1462 | ||
4ee9c684 | 1463 | sym->backend_decl = fndecl; |
1464 | ||
1465 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1466 | pushdecl_top_level (fndecl); | |
1467 | ||
36b0a1b0 | 1468 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1469 | decl_attributes (&fndecl, attributes, 0); | |
1470 | ||
4ee9c684 | 1471 | return fndecl; |
1472 | } | |
1473 | ||
1474 | ||
1475 | /* Create a declaration for a procedure. For external functions (in the C | |
1b716045 | 1476 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1477 | a master function with alternate entry points. */ | |
4ee9c684 | 1478 | |
1b716045 | 1479 | static void |
1480 | build_function_decl (gfc_symbol * sym) | |
4ee9c684 | 1481 | { |
36b0a1b0 | 1482 | tree fndecl, type, attributes; |
4ee9c684 | 1483 | symbol_attribute attr; |
1b716045 | 1484 | tree result_decl; |
4ee9c684 | 1485 | gfc_formal_arglist *f; |
1486 | ||
22d678e8 | 1487 | gcc_assert (!sym->backend_decl); |
1488 | gcc_assert (!sym->attr.external); | |
4ee9c684 | 1489 | |
b31f705b | 1490 | /* Set the line and filename. sym->declared_at seems to point to the |
1491 | last statement for subroutines, but it'll do for now. */ | |
1492 | gfc_set_backend_locus (&sym->declared_at); | |
1493 | ||
4ee9c684 | 1494 | /* Allow only one nesting level. Allow public declarations. */ |
22d678e8 | 1495 | gcc_assert (current_function_decl == NULL_TREE |
df4d540f | 1496 | || DECL_CONTEXT (current_function_decl) == NULL_TREE |
1497 | || TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1498 | == NAMESPACE_DECL); | |
4ee9c684 | 1499 | |
1500 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1501 | fndecl = build_decl (input_location, |
1502 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
4ee9c684 | 1503 | |
1504 | /* Perform name mangling if this is a top level or module procedure. */ | |
1505 | if (current_function_decl == NULL_TREE) | |
1506 | SET_DECL_ASSEMBLER_NAME (fndecl, gfc_sym_mangled_function_id (sym)); | |
1507 | ||
1508 | /* Figure out the return type of the declared function, and build a | |
f888a3fb | 1509 | RESULT_DECL for it. If this is a subroutine with alternate |
4ee9c684 | 1510 | returns, build a RESULT_DECL for it. */ |
1511 | attr = sym->attr; | |
1512 | ||
1513 | result_decl = NULL_TREE; | |
1514 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1515 | if (attr.function) | |
1516 | { | |
1517 | if (gfc_return_by_reference (sym)) | |
1518 | type = void_type_node; | |
1519 | else | |
1520 | { | |
1521 | if (sym->result != sym) | |
1522 | result_decl = gfc_sym_identifier (sym->result); | |
1523 | ||
1524 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1525 | } | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | /* Look for alternate return placeholders. */ | |
1530 | int has_alternate_returns = 0; | |
1531 | for (f = sym->formal; f; f = f->next) | |
1532 | { | |
1533 | if (f->sym == NULL) | |
1534 | { | |
1535 | has_alternate_returns = 1; | |
1536 | break; | |
1537 | } | |
1538 | } | |
1539 | ||
1540 | if (has_alternate_returns) | |
1541 | type = integer_type_node; | |
1542 | else | |
1543 | type = void_type_node; | |
1544 | } | |
1545 | ||
e60a6f7b | 1546 | result_decl = build_decl (input_location, |
1547 | RESULT_DECL, result_decl, type); | |
540edea7 | 1548 | DECL_ARTIFICIAL (result_decl) = 1; |
1549 | DECL_IGNORED_P (result_decl) = 1; | |
4ee9c684 | 1550 | DECL_CONTEXT (result_decl) = fndecl; |
1551 | DECL_RESULT (fndecl) = result_decl; | |
1552 | ||
1553 | /* Don't call layout_decl for a RESULT_DECL. | |
f888a3fb | 1554 | layout_decl (result_decl, 0); */ |
4ee9c684 | 1555 | |
4ee9c684 | 1556 | /* Set up all attributes for the function. */ |
1557 | DECL_CONTEXT (fndecl) = current_function_decl; | |
1558 | DECL_EXTERNAL (fndecl) = 0; | |
1559 | ||
9d138f47 | 1560 | /* This specifies if a function is globally visible, i.e. it is |
dfc222eb | 1561 | the opposite of declaring static in C. */ |
1b716045 | 1562 | if (DECL_CONTEXT (fndecl) == NULL_TREE |
7257a5d2 | 1563 | && !sym->attr.entry_master && !sym->attr.is_main_program) |
4ee9c684 | 1564 | TREE_PUBLIC (fndecl) = 1; |
1565 | ||
1566 | /* TREE_STATIC means the function body is defined here. */ | |
e4b2c26c | 1567 | TREE_STATIC (fndecl) = 1; |
4ee9c684 | 1568 | |
f888a3fb | 1569 | /* Set attributes for PURE functions. A call to a PURE function in the |
4ee9c684 | 1570 | Fortran 95 sense is both pure and without side effects in the C |
1571 | sense. */ | |
1572 | if (attr.pure || attr.elemental) | |
1573 | { | |
be393645 | 1574 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
a0527218 | 1575 | including an alternate return. In that case it can also be |
231e961a | 1576 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
4c319962 | 1577 | if (attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1578 | DECL_PURE_P (fndecl) = 1; |
4ee9c684 | 1579 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1580 | } | |
1581 | ||
36b0a1b0 | 1582 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1583 | decl_attributes (&fndecl, attributes, 0); | |
1584 | ||
4ee9c684 | 1585 | /* Layout the function declaration and put it in the binding level |
1586 | of the current function. */ | |
e4b2c26c | 1587 | pushdecl (fndecl); |
1b716045 | 1588 | |
1589 | sym->backend_decl = fndecl; | |
1590 | } | |
1591 | ||
1592 | ||
1593 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1594 | ||
1595 | static void | |
1596 | create_function_arglist (gfc_symbol * sym) | |
1597 | { | |
1598 | tree fndecl; | |
1599 | gfc_formal_arglist *f; | |
d4163395 | 1600 | tree typelist, hidden_typelist; |
1601 | tree arglist, hidden_arglist; | |
1b716045 | 1602 | tree type; |
1603 | tree parm; | |
1604 | ||
1605 | fndecl = sym->backend_decl; | |
1606 | ||
e4b2c26c | 1607 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
1608 | the new FUNCTION_DECL node. */ | |
e4b2c26c | 1609 | arglist = NULL_TREE; |
d4163395 | 1610 | hidden_arglist = NULL_TREE; |
e4b2c26c | 1611 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
1b716045 | 1612 | |
1613 | if (sym->attr.entry_master) | |
1614 | { | |
1615 | type = TREE_VALUE (typelist); | |
e60a6f7b | 1616 | parm = build_decl (input_location, |
1617 | PARM_DECL, get_identifier ("__entry"), type); | |
1b716045 | 1618 | |
1619 | DECL_CONTEXT (parm) = fndecl; | |
1620 | DECL_ARG_TYPE (parm) = type; | |
1621 | TREE_READONLY (parm) = 1; | |
b9c7fce7 | 1622 | gfc_finish_decl (parm); |
d95efb59 | 1623 | DECL_ARTIFICIAL (parm) = 1; |
1b716045 | 1624 | |
1625 | arglist = chainon (arglist, parm); | |
1626 | typelist = TREE_CHAIN (typelist); | |
1627 | } | |
1628 | ||
e4b2c26c | 1629 | if (gfc_return_by_reference (sym)) |
4ee9c684 | 1630 | { |
d4163395 | 1631 | tree type = TREE_VALUE (typelist), length = NULL; |
4ee9c684 | 1632 | |
e4b2c26c | 1633 | if (sym->ts.type == BT_CHARACTER) |
1634 | { | |
e4b2c26c | 1635 | /* Length of character result. */ |
d4163395 | 1636 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
1637 | gcc_assert (len_type == gfc_charlen_type_node); | |
4ee9c684 | 1638 | |
e60a6f7b | 1639 | length = build_decl (input_location, |
1640 | PARM_DECL, | |
e4b2c26c | 1641 | get_identifier (".__result"), |
d4163395 | 1642 | len_type); |
e4b2c26c | 1643 | if (!sym->ts.cl->length) |
1644 | { | |
1645 | sym->ts.cl->backend_decl = length; | |
1646 | TREE_USED (length) = 1; | |
4ee9c684 | 1647 | } |
22d678e8 | 1648 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
e4b2c26c | 1649 | DECL_CONTEXT (length) = fndecl; |
d4163395 | 1650 | DECL_ARG_TYPE (length) = len_type; |
e4b2c26c | 1651 | TREE_READONLY (length) = 1; |
b5b40b3f | 1652 | DECL_ARTIFICIAL (length) = 1; |
b9c7fce7 | 1653 | gfc_finish_decl (length); |
d4163395 | 1654 | if (sym->ts.cl->backend_decl == NULL |
1655 | || sym->ts.cl->backend_decl == length) | |
1656 | { | |
1657 | gfc_symbol *arg; | |
1658 | tree backend_decl; | |
4ee9c684 | 1659 | |
d4163395 | 1660 | if (sym->ts.cl->backend_decl == NULL) |
1661 | { | |
e60a6f7b | 1662 | tree len = build_decl (input_location, |
1663 | VAR_DECL, | |
d4163395 | 1664 | get_identifier ("..__result"), |
1665 | gfc_charlen_type_node); | |
1666 | DECL_ARTIFICIAL (len) = 1; | |
1667 | TREE_USED (len) = 1; | |
1668 | sym->ts.cl->backend_decl = len; | |
1669 | } | |
4ee9c684 | 1670 | |
d4163395 | 1671 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
1672 | arg = sym->result ? sym->result : sym; | |
1673 | backend_decl = arg->backend_decl; | |
1674 | /* Temporary clear it, so that gfc_sym_type creates complete | |
1675 | type. */ | |
1676 | arg->backend_decl = NULL; | |
1677 | type = gfc_sym_type (arg); | |
1678 | arg->backend_decl = backend_decl; | |
1679 | type = build_reference_type (type); | |
1680 | } | |
1681 | } | |
4ee9c684 | 1682 | |
e60a6f7b | 1683 | parm = build_decl (input_location, |
1684 | PARM_DECL, get_identifier ("__result"), type); | |
4ee9c684 | 1685 | |
d4163395 | 1686 | DECL_CONTEXT (parm) = fndecl; |
1687 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1688 | TREE_READONLY (parm) = 1; | |
1689 | DECL_ARTIFICIAL (parm) = 1; | |
b9c7fce7 | 1690 | gfc_finish_decl (parm); |
4ee9c684 | 1691 | |
d4163395 | 1692 | arglist = chainon (arglist, parm); |
1693 | typelist = TREE_CHAIN (typelist); | |
4ee9c684 | 1694 | |
d4163395 | 1695 | if (sym->ts.type == BT_CHARACTER) |
1696 | { | |
1697 | gfc_allocate_lang_decl (parm); | |
1698 | arglist = chainon (arglist, length); | |
e4b2c26c | 1699 | typelist = TREE_CHAIN (typelist); |
1700 | } | |
1701 | } | |
4ee9c684 | 1702 | |
d4163395 | 1703 | hidden_typelist = typelist; |
1704 | for (f = sym->formal; f; f = f->next) | |
1705 | if (f->sym != NULL) /* Ignore alternate returns. */ | |
1706 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1707 | ||
e4b2c26c | 1708 | for (f = sym->formal; f; f = f->next) |
1709 | { | |
1710 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
d4163395 | 1711 | |
e4b2c26c | 1712 | /* Ignore alternate returns. */ |
1713 | if (f->sym == NULL) | |
1714 | continue; | |
4ee9c684 | 1715 | |
e4b2c26c | 1716 | type = TREE_VALUE (typelist); |
4ee9c684 | 1717 | |
d4163395 | 1718 | if (f->sym->ts.type == BT_CHARACTER) |
1719 | { | |
1720 | tree len_type = TREE_VALUE (hidden_typelist); | |
1721 | tree length = NULL_TREE; | |
1722 | gcc_assert (len_type == gfc_charlen_type_node); | |
1723 | ||
1724 | strcpy (&name[1], f->sym->name); | |
1725 | name[0] = '_'; | |
e60a6f7b | 1726 | length = build_decl (input_location, |
1727 | PARM_DECL, get_identifier (name), len_type); | |
4ee9c684 | 1728 | |
d4163395 | 1729 | hidden_arglist = chainon (hidden_arglist, length); |
1730 | DECL_CONTEXT (length) = fndecl; | |
1731 | DECL_ARTIFICIAL (length) = 1; | |
1732 | DECL_ARG_TYPE (length) = len_type; | |
1733 | TREE_READONLY (length) = 1; | |
b9c7fce7 | 1734 | gfc_finish_decl (length); |
4ee9c684 | 1735 | |
a4abf8a0 | 1736 | /* Remember the passed value. */ |
6be7c32c | 1737 | if (f->sym->ts.cl->passed_length != NULL) |
1738 | { | |
1739 | /* This can happen if the same type is used for multiple | |
1740 | arguments. We need to copy cl as otherwise | |
1741 | cl->passed_length gets overwritten. */ | |
1742 | gfc_charlen *cl, *cl2; | |
1743 | cl = f->sym->ts.cl; | |
1744 | f->sym->ts.cl = gfc_get_charlen(); | |
1745 | f->sym->ts.cl->length = cl->length; | |
1746 | f->sym->ts.cl->backend_decl = cl->backend_decl; | |
1747 | f->sym->ts.cl->length_from_typespec = cl->length_from_typespec; | |
1748 | f->sym->ts.cl->resolved = cl->resolved; | |
1749 | cl2 = f->sym->ts.cl->next; | |
1750 | f->sym->ts.cl->next = cl; | |
1751 | cl->next = cl2; | |
1752 | } | |
a4abf8a0 | 1753 | f->sym->ts.cl->passed_length = length; |
4ee9c684 | 1754 | |
d4163395 | 1755 | /* Use the passed value for assumed length variables. */ |
1756 | if (!f->sym->ts.cl->length) | |
4ee9c684 | 1757 | { |
d4163395 | 1758 | TREE_USED (length) = 1; |
04b61f60 | 1759 | gcc_assert (!f->sym->ts.cl->backend_decl); |
1760 | f->sym->ts.cl->backend_decl = length; | |
d4163395 | 1761 | } |
1762 | ||
1763 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1764 | ||
1765 | if (f->sym->ts.cl->backend_decl == NULL | |
1766 | || f->sym->ts.cl->backend_decl == length) | |
1767 | { | |
1768 | if (f->sym->ts.cl->backend_decl == NULL) | |
1769 | gfc_create_string_length (f->sym); | |
1770 | ||
1771 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
1772 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1773 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1774 | else | |
1775 | type = gfc_sym_type (f->sym); | |
4ee9c684 | 1776 | } |
4ee9c684 | 1777 | } |
1778 | ||
d4163395 | 1779 | /* For non-constant length array arguments, make sure they use |
1780 | a different type node from TYPE_ARG_TYPES type. */ | |
1781 | if (f->sym->attr.dimension | |
1782 | && type == TREE_VALUE (typelist) | |
1783 | && TREE_CODE (type) == POINTER_TYPE | |
1784 | && GFC_ARRAY_TYPE_P (type) | |
1785 | && f->sym->as->type != AS_ASSUMED_SIZE | |
1786 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
1787 | { | |
1788 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1789 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1790 | else | |
1791 | type = gfc_sym_type (f->sym); | |
1792 | } | |
1793 | ||
cad0ddcf | 1794 | if (f->sym->attr.proc_pointer) |
1795 | type = build_pointer_type (type); | |
1796 | ||
69b1505f | 1797 | /* Build the argument declaration. */ |
e60a6f7b | 1798 | parm = build_decl (input_location, |
1799 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
d4163395 | 1800 | |
1801 | /* Fill in arg stuff. */ | |
1802 | DECL_CONTEXT (parm) = fndecl; | |
1803 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1804 | /* All implementation args are read-only. */ | |
1805 | TREE_READONLY (parm) = 1; | |
98923a84 | 1806 | if (POINTER_TYPE_P (type) |
1807 | && (!f->sym->attr.proc_pointer | |
1808 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
1809 | DECL_BY_REFERENCE (parm) = 1; | |
d4163395 | 1810 | |
b9c7fce7 | 1811 | gfc_finish_decl (parm); |
d4163395 | 1812 | |
1813 | f->sym->backend_decl = parm; | |
1814 | ||
1815 | arglist = chainon (arglist, parm); | |
e4b2c26c | 1816 | typelist = TREE_CHAIN (typelist); |
4ee9c684 | 1817 | } |
e4b2c26c | 1818 | |
465e4a95 | 1819 | /* Add the hidden string length parameters, unless the procedure |
1820 | is bind(C). */ | |
1821 | if (!sym->attr.is_bind_c) | |
1822 | arglist = chainon (arglist, hidden_arglist); | |
d4163395 | 1823 | |
ebe27ea2 | 1824 | gcc_assert (hidden_typelist == NULL_TREE |
1825 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
e4b2c26c | 1826 | DECL_ARGUMENTS (fndecl) = arglist; |
1b716045 | 1827 | } |
e4b2c26c | 1828 | |
1b716045 | 1829 | /* Do the setup necessary before generating the body of a function. */ |
1830 | ||
1831 | static void | |
1832 | trans_function_start (gfc_symbol * sym) | |
1833 | { | |
1834 | tree fndecl; | |
1835 | ||
1836 | fndecl = sym->backend_decl; | |
1837 | ||
f888a3fb | 1838 | /* Let GCC know the current scope is this function. */ |
1b716045 | 1839 | current_function_decl = fndecl; |
1840 | ||
f888a3fb | 1841 | /* Let the world know what we're about to do. */ |
1b716045 | 1842 | announce_function (fndecl); |
1843 | ||
1844 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1845 | { | |
f888a3fb | 1846 | /* Create RTL for function declaration. */ |
1b716045 | 1847 | rest_of_decl_compilation (fndecl, 1, 0); |
1848 | } | |
1849 | ||
f888a3fb | 1850 | /* Create RTL for function definition. */ |
1b716045 | 1851 | make_decl_rtl (fndecl); |
1852 | ||
1b716045 | 1853 | init_function_start (fndecl); |
1854 | ||
1855 | /* Even though we're inside a function body, we still don't want to | |
1856 | call expand_expr to calculate the size of a variable-sized array. | |
1857 | We haven't necessarily assigned RTL to all variables yet, so it's | |
1858 | not safe to try to expand expressions involving them. */ | |
18d50ae6 | 1859 | cfun->dont_save_pending_sizes_p = 1; |
1b716045 | 1860 | |
f888a3fb | 1861 | /* function.c requires a push at the start of the function. */ |
1b716045 | 1862 | pushlevel (0); |
1863 | } | |
1864 | ||
1865 | /* Create thunks for alternate entry points. */ | |
1866 | ||
1867 | static void | |
1868 | build_entry_thunks (gfc_namespace * ns) | |
1869 | { | |
1870 | gfc_formal_arglist *formal; | |
1871 | gfc_formal_arglist *thunk_formal; | |
1872 | gfc_entry_list *el; | |
1873 | gfc_symbol *thunk_sym; | |
1874 | stmtblock_t body; | |
1875 | tree thunk_fndecl; | |
1876 | tree args; | |
1877 | tree string_args; | |
1878 | tree tmp; | |
b31f705b | 1879 | locus old_loc; |
1b716045 | 1880 | |
1881 | /* This should always be a toplevel function. */ | |
22d678e8 | 1882 | gcc_assert (current_function_decl == NULL_TREE); |
1b716045 | 1883 | |
b31f705b | 1884 | gfc_get_backend_locus (&old_loc); |
1b716045 | 1885 | for (el = ns->entries; el; el = el->next) |
1886 | { | |
1887 | thunk_sym = el->sym; | |
1888 | ||
1889 | build_function_decl (thunk_sym); | |
1890 | create_function_arglist (thunk_sym); | |
1891 | ||
1892 | trans_function_start (thunk_sym); | |
1893 | ||
1894 | thunk_fndecl = thunk_sym->backend_decl; | |
1895 | ||
e5004242 | 1896 | gfc_init_block (&body); |
1b716045 | 1897 | |
f888a3fb | 1898 | /* Pass extra parameter identifying this entry point. */ |
7016c612 | 1899 | tmp = build_int_cst (gfc_array_index_type, el->id); |
1b716045 | 1900 | args = tree_cons (NULL_TREE, tmp, NULL_TREE); |
1901 | string_args = NULL_TREE; | |
1902 | ||
c6871095 | 1903 | if (thunk_sym->attr.function) |
1904 | { | |
1905 | if (gfc_return_by_reference (ns->proc_name)) | |
1906 | { | |
1907 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
1908 | args = tree_cons (NULL_TREE, ref, args); | |
1909 | if (ns->proc_name->ts.type == BT_CHARACTER) | |
1910 | args = tree_cons (NULL_TREE, TREE_CHAIN (ref), | |
1911 | args); | |
1912 | } | |
1913 | } | |
1914 | ||
1b716045 | 1915 | for (formal = ns->proc_name->formal; formal; formal = formal->next) |
1916 | { | |
c6871095 | 1917 | /* Ignore alternate returns. */ |
1918 | if (formal->sym == NULL) | |
1919 | continue; | |
1920 | ||
1b716045 | 1921 | /* We don't have a clever way of identifying arguments, so resort to |
1922 | a brute-force search. */ | |
1923 | for (thunk_formal = thunk_sym->formal; | |
1924 | thunk_formal; | |
1925 | thunk_formal = thunk_formal->next) | |
1926 | { | |
1927 | if (thunk_formal->sym == formal->sym) | |
1928 | break; | |
1929 | } | |
1930 | ||
1931 | if (thunk_formal) | |
1932 | { | |
1933 | /* Pass the argument. */ | |
d95efb59 | 1934 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
1b716045 | 1935 | args = tree_cons (NULL_TREE, thunk_formal->sym->backend_decl, |
1936 | args); | |
1937 | if (formal->sym->ts.type == BT_CHARACTER) | |
1938 | { | |
1939 | tmp = thunk_formal->sym->ts.cl->backend_decl; | |
1940 | string_args = tree_cons (NULL_TREE, tmp, string_args); | |
1941 | } | |
1942 | } | |
1943 | else | |
1944 | { | |
1945 | /* Pass NULL for a missing argument. */ | |
1946 | args = tree_cons (NULL_TREE, null_pointer_node, args); | |
1947 | if (formal->sym->ts.type == BT_CHARACTER) | |
1948 | { | |
7d3075f6 | 1949 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
1b716045 | 1950 | string_args = tree_cons (NULL_TREE, tmp, string_args); |
1951 | } | |
1952 | } | |
1953 | } | |
1954 | ||
1955 | /* Call the master function. */ | |
1956 | args = nreverse (args); | |
1957 | args = chainon (args, nreverse (string_args)); | |
1958 | tmp = ns->proc_name->backend_decl; | |
389dd41b | 1959 | tmp = build_function_call_expr (input_location, tmp, args); |
c6871095 | 1960 | if (ns->proc_name->attr.mixed_entry_master) |
1961 | { | |
1962 | tree union_decl, field; | |
1963 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
1964 | ||
e60a6f7b | 1965 | union_decl = build_decl (input_location, |
1966 | VAR_DECL, get_identifier ("__result"), | |
c6871095 | 1967 | TREE_TYPE (master_type)); |
1968 | DECL_ARTIFICIAL (union_decl) = 1; | |
1969 | DECL_EXTERNAL (union_decl) = 0; | |
1970 | TREE_PUBLIC (union_decl) = 0; | |
1971 | TREE_USED (union_decl) = 1; | |
1972 | layout_decl (union_decl, 0); | |
1973 | pushdecl (union_decl); | |
1974 | ||
1975 | DECL_CONTEXT (union_decl) = current_function_decl; | |
f75d6b8a | 1976 | tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (union_decl), |
1977 | union_decl, tmp); | |
c6871095 | 1978 | gfc_add_expr_to_block (&body, tmp); |
1979 | ||
1980 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
1981 | field; field = TREE_CHAIN (field)) | |
1982 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
1983 | thunk_sym->result->name) == 0) | |
1984 | break; | |
1985 | gcc_assert (field != NULL_TREE); | |
f75d6b8a | 1986 | tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
1987 | union_decl, field, NULL_TREE); | |
1988 | tmp = fold_build2 (MODIFY_EXPR, | |
1989 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
1990 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 1991 | tmp = build1_v (RETURN_EXPR, tmp); |
1992 | } | |
1993 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
1994 | != void_type_node) | |
1995 | { | |
f75d6b8a | 1996 | tmp = fold_build2 (MODIFY_EXPR, |
1997 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
1998 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 1999 | tmp = build1_v (RETURN_EXPR, tmp); |
2000 | } | |
1b716045 | 2001 | gfc_add_expr_to_block (&body, tmp); |
2002 | ||
2003 | /* Finish off this function and send it for code generation. */ | |
2004 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
e5004242 | 2005 | tmp = getdecls (); |
1b716045 | 2006 | poplevel (1, 0, 1); |
2007 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; | |
e5004242 | 2008 | DECL_SAVED_TREE (thunk_fndecl) |
2009 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2010 | DECL_INITIAL (thunk_fndecl)); | |
1b716045 | 2011 | |
2012 | /* Output the GENERIC tree. */ | |
2013 | dump_function (TDI_original, thunk_fndecl); | |
2014 | ||
2015 | /* Store the end of the function, so that we get good line number | |
2016 | info for the epilogue. */ | |
2017 | cfun->function_end_locus = input_location; | |
2018 | ||
2019 | /* We're leaving the context of this function, so zap cfun. | |
2020 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2021 | tree_rest_of_compilation. */ | |
87d4aa85 | 2022 | set_cfun (NULL); |
1b716045 | 2023 | |
2024 | current_function_decl = NULL_TREE; | |
2025 | ||
9d95b2b0 | 2026 | cgraph_finalize_function (thunk_fndecl, false); |
1b716045 | 2027 | |
2028 | /* We share the symbols in the formal argument list with other entry | |
2029 | points and the master function. Clear them so that they are | |
2030 | recreated for each function. */ | |
2031 | for (formal = thunk_sym->formal; formal; formal = formal->next) | |
c6871095 | 2032 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2033 | { | |
2034 | formal->sym->backend_decl = NULL_TREE; | |
2035 | if (formal->sym->ts.type == BT_CHARACTER) | |
2036 | formal->sym->ts.cl->backend_decl = NULL_TREE; | |
2037 | } | |
2038 | ||
2039 | if (thunk_sym->attr.function) | |
1b716045 | 2040 | { |
c6871095 | 2041 | if (thunk_sym->ts.type == BT_CHARACTER) |
2042 | thunk_sym->ts.cl->backend_decl = NULL_TREE; | |
2043 | if (thunk_sym->result->ts.type == BT_CHARACTER) | |
2044 | thunk_sym->result->ts.cl->backend_decl = NULL_TREE; | |
1b716045 | 2045 | } |
2046 | } | |
b31f705b | 2047 | |
2048 | gfc_set_backend_locus (&old_loc); | |
1b716045 | 2049 | } |
2050 | ||
2051 | ||
2052 | /* Create a decl for a function, and create any thunks for alternate entry | |
2053 | points. */ | |
2054 | ||
2055 | void | |
2056 | gfc_create_function_decl (gfc_namespace * ns) | |
2057 | { | |
2058 | /* Create a declaration for the master function. */ | |
2059 | build_function_decl (ns->proc_name); | |
2060 | ||
f888a3fb | 2061 | /* Compile the entry thunks. */ |
1b716045 | 2062 | if (ns->entries) |
2063 | build_entry_thunks (ns); | |
2064 | ||
2065 | /* Now create the read argument list. */ | |
2066 | create_function_arglist (ns->proc_name); | |
2067 | } | |
2068 | ||
c750cc52 | 2069 | /* Return the decl used to hold the function return value. If |
3350e716 | 2070 | parent_flag is set, the context is the parent_scope. */ |
4ee9c684 | 2071 | |
2072 | tree | |
c750cc52 | 2073 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
4ee9c684 | 2074 | { |
c750cc52 | 2075 | tree decl; |
2076 | tree length; | |
2077 | tree this_fake_result_decl; | |
2078 | tree this_function_decl; | |
4ee9c684 | 2079 | |
2080 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2081 | ||
c750cc52 | 2082 | if (parent_flag) |
2083 | { | |
2084 | this_fake_result_decl = parent_fake_result_decl; | |
2085 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2086 | } | |
2087 | else | |
2088 | { | |
2089 | this_fake_result_decl = current_fake_result_decl; | |
2090 | this_function_decl = current_function_decl; | |
2091 | } | |
2092 | ||
c6871095 | 2093 | if (sym |
c750cc52 | 2094 | && sym->ns->proc_name->backend_decl == this_function_decl |
d4163395 | 2095 | && sym->ns->proc_name->attr.entry_master |
c6871095 | 2096 | && sym != sym->ns->proc_name) |
2097 | { | |
d4163395 | 2098 | tree t = NULL, var; |
c750cc52 | 2099 | if (this_fake_result_decl != NULL) |
2100 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
d4163395 | 2101 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2102 | break; | |
2103 | if (t) | |
2104 | return TREE_VALUE (t); | |
c750cc52 | 2105 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2106 | ||
2107 | if (parent_flag) | |
2108 | this_fake_result_decl = parent_fake_result_decl; | |
2109 | else | |
2110 | this_fake_result_decl = current_fake_result_decl; | |
2111 | ||
d4163395 | 2112 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
c6871095 | 2113 | { |
2114 | tree field; | |
2115 | ||
2116 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
2117 | field; field = TREE_CHAIN (field)) | |
2118 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
2119 | sym->name) == 0) | |
2120 | break; | |
2121 | ||
2122 | gcc_assert (field != NULL_TREE); | |
f75d6b8a | 2123 | decl = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
2124 | decl, field, NULL_TREE); | |
c6871095 | 2125 | } |
c750cc52 | 2126 | |
2127 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2128 | if (parent_flag) | |
2129 | gfc_add_decl_to_parent_function (var); | |
2130 | else | |
2131 | gfc_add_decl_to_function (var); | |
2132 | ||
d4163395 | 2133 | SET_DECL_VALUE_EXPR (var, decl); |
2134 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
2cf330c4 | 2135 | GFC_DECL_RESULT (var) = 1; |
c750cc52 | 2136 | |
2137 | TREE_CHAIN (this_fake_result_decl) | |
2138 | = tree_cons (get_identifier (sym->name), var, | |
2139 | TREE_CHAIN (this_fake_result_decl)); | |
d4163395 | 2140 | return var; |
c6871095 | 2141 | } |
2142 | ||
c750cc52 | 2143 | if (this_fake_result_decl != NULL_TREE) |
2144 | return TREE_VALUE (this_fake_result_decl); | |
4ee9c684 | 2145 | |
2146 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2147 | sym is NULL. */ | |
2148 | if (!sym) | |
2149 | return NULL_TREE; | |
2150 | ||
d4163395 | 2151 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 2152 | { |
d4163395 | 2153 | if (sym->ts.cl->backend_decl == NULL_TREE) |
2154 | length = gfc_create_string_length (sym); | |
2155 | else | |
2156 | length = sym->ts.cl->backend_decl; | |
2157 | if (TREE_CODE (length) == VAR_DECL | |
2158 | && DECL_CONTEXT (length) == NULL_TREE) | |
99042714 | 2159 | gfc_add_decl_to_function (length); |
4ee9c684 | 2160 | } |
2161 | ||
2162 | if (gfc_return_by_reference (sym)) | |
2163 | { | |
c750cc52 | 2164 | decl = DECL_ARGUMENTS (this_function_decl); |
c6871095 | 2165 | |
c750cc52 | 2166 | if (sym->ns->proc_name->backend_decl == this_function_decl |
c6871095 | 2167 | && sym->ns->proc_name->attr.entry_master) |
2168 | decl = TREE_CHAIN (decl); | |
4ee9c684 | 2169 | |
2170 | TREE_USED (decl) = 1; | |
2171 | if (sym->as) | |
2172 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2173 | } | |
2174 | else | |
2175 | { | |
2176 | sprintf (name, "__result_%.20s", | |
c750cc52 | 2177 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
4ee9c684 | 2178 | |
3350e716 | 2179 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
e60a6f7b | 2180 | decl = build_decl (input_location, |
2181 | VAR_DECL, get_identifier (name), | |
3350e716 | 2182 | gfc_sym_type (sym)); |
2183 | else | |
e60a6f7b | 2184 | decl = build_decl (input_location, |
2185 | VAR_DECL, get_identifier (name), | |
3350e716 | 2186 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
4ee9c684 | 2187 | DECL_ARTIFICIAL (decl) = 1; |
2188 | DECL_EXTERNAL (decl) = 0; | |
2189 | TREE_PUBLIC (decl) = 0; | |
2190 | TREE_USED (decl) = 1; | |
764f1175 | 2191 | GFC_DECL_RESULT (decl) = 1; |
a379e3a9 | 2192 | TREE_ADDRESSABLE (decl) = 1; |
4ee9c684 | 2193 | |
2194 | layout_decl (decl, 0); | |
2195 | ||
c750cc52 | 2196 | if (parent_flag) |
2197 | gfc_add_decl_to_parent_function (decl); | |
2198 | else | |
2199 | gfc_add_decl_to_function (decl); | |
4ee9c684 | 2200 | } |
2201 | ||
c750cc52 | 2202 | if (parent_flag) |
2203 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2204 | else | |
2205 | current_fake_result_decl = build_tree_list (NULL, decl); | |
4ee9c684 | 2206 | |
2207 | return decl; | |
2208 | } | |
2209 | ||
2210 | ||
2211 | /* Builds a function decl. The remaining parameters are the types of the | |
2212 | function arguments. Negative nargs indicates a varargs function. */ | |
2213 | ||
2214 | tree | |
2215 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2216 | { | |
2217 | tree arglist; | |
2218 | tree argtype; | |
2219 | tree fntype; | |
2220 | tree fndecl; | |
2221 | va_list p; | |
2222 | int n; | |
2223 | ||
2224 | /* Library functions must be declared with global scope. */ | |
22d678e8 | 2225 | gcc_assert (current_function_decl == NULL_TREE); |
4ee9c684 | 2226 | |
2227 | va_start (p, nargs); | |
2228 | ||
2229 | ||
2230 | /* Create a list of the argument types. */ | |
2231 | for (arglist = NULL_TREE, n = abs (nargs); n > 0; n--) | |
2232 | { | |
2233 | argtype = va_arg (p, tree); | |
2234 | arglist = gfc_chainon_list (arglist, argtype); | |
2235 | } | |
2236 | ||
2237 | if (nargs >= 0) | |
2238 | { | |
2239 | /* Terminate the list. */ | |
2240 | arglist = gfc_chainon_list (arglist, void_type_node); | |
2241 | } | |
2242 | ||
2243 | /* Build the function type and decl. */ | |
2244 | fntype = build_function_type (rettype, arglist); | |
e60a6f7b | 2245 | fndecl = build_decl (input_location, |
2246 | FUNCTION_DECL, name, fntype); | |
4ee9c684 | 2247 | |
2248 | /* Mark this decl as external. */ | |
2249 | DECL_EXTERNAL (fndecl) = 1; | |
2250 | TREE_PUBLIC (fndecl) = 1; | |
2251 | ||
2252 | va_end (p); | |
2253 | ||
2254 | pushdecl (fndecl); | |
2255 | ||
b2c4af5e | 2256 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 2257 | |
2258 | return fndecl; | |
2259 | } | |
2260 | ||
2261 | static void | |
2262 | gfc_build_intrinsic_function_decls (void) | |
2263 | { | |
90ba9145 | 2264 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2265 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
920e54ef | 2266 | tree gfc_int16_type_node = gfc_get_int_type (16); |
90ba9145 | 2267 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
40b806de | 2268 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2269 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
90ba9145 | 2270 | |
4ee9c684 | 2271 | /* String functions. */ |
4ee9c684 | 2272 | gfor_fndecl_compare_string = |
2273 | gfc_build_library_function_decl (get_identifier (PREFIX("compare_string")), | |
f20cadb1 | 2274 | integer_type_node, 4, |
40b806de | 2275 | gfc_charlen_type_node, pchar1_type_node, |
2276 | gfc_charlen_type_node, pchar1_type_node); | |
4ee9c684 | 2277 | |
2278 | gfor_fndecl_concat_string = | |
2279 | gfc_build_library_function_decl (get_identifier (PREFIX("concat_string")), | |
40b806de | 2280 | void_type_node, 6, |
2281 | gfc_charlen_type_node, pchar1_type_node, | |
2282 | gfc_charlen_type_node, pchar1_type_node, | |
2283 | gfc_charlen_type_node, pchar1_type_node); | |
4ee9c684 | 2284 | |
2285 | gfor_fndecl_string_len_trim = | |
2286 | gfc_build_library_function_decl (get_identifier (PREFIX("string_len_trim")), | |
40b806de | 2287 | gfc_int4_type_node, 2, |
2288 | gfc_charlen_type_node, pchar1_type_node); | |
4ee9c684 | 2289 | |
2290 | gfor_fndecl_string_index = | |
2291 | gfc_build_library_function_decl (get_identifier (PREFIX("string_index")), | |
40b806de | 2292 | gfc_int4_type_node, 5, |
2293 | gfc_charlen_type_node, pchar1_type_node, | |
2294 | gfc_charlen_type_node, pchar1_type_node, | |
2295 | gfc_logical4_type_node); | |
4ee9c684 | 2296 | |
2297 | gfor_fndecl_string_scan = | |
2298 | gfc_build_library_function_decl (get_identifier (PREFIX("string_scan")), | |
40b806de | 2299 | gfc_int4_type_node, 5, |
2300 | gfc_charlen_type_node, pchar1_type_node, | |
2301 | gfc_charlen_type_node, pchar1_type_node, | |
2302 | gfc_logical4_type_node); | |
4ee9c684 | 2303 | |
2304 | gfor_fndecl_string_verify = | |
2305 | gfc_build_library_function_decl (get_identifier (PREFIX("string_verify")), | |
40b806de | 2306 | gfc_int4_type_node, 5, |
2307 | gfc_charlen_type_node, pchar1_type_node, | |
2308 | gfc_charlen_type_node, pchar1_type_node, | |
2309 | gfc_logical4_type_node); | |
4ee9c684 | 2310 | |
5b11d932 | 2311 | gfor_fndecl_string_trim = |
4ee9c684 | 2312 | gfc_build_library_function_decl (get_identifier (PREFIX("string_trim")), |
40b806de | 2313 | void_type_node, 4, |
2314 | build_pointer_type (gfc_charlen_type_node), | |
2315 | build_pointer_type (pchar1_type_node), | |
2316 | gfc_charlen_type_node, pchar1_type_node); | |
4ee9c684 | 2317 | |
5fcc6ec2 | 2318 | gfor_fndecl_string_minmax = |
2319 | gfc_build_library_function_decl (get_identifier (PREFIX("string_minmax")), | |
40b806de | 2320 | void_type_node, -4, |
2321 | build_pointer_type (gfc_charlen_type_node), | |
2322 | build_pointer_type (pchar1_type_node), | |
2323 | integer_type_node, integer_type_node); | |
2324 | ||
2325 | gfor_fndecl_adjustl = | |
2326 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustl")), | |
2327 | void_type_node, 3, pchar1_type_node, | |
2328 | gfc_charlen_type_node, pchar1_type_node); | |
2329 | ||
2330 | gfor_fndecl_adjustr = | |
2331 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustr")), | |
2332 | void_type_node, 3, pchar1_type_node, | |
2333 | gfc_charlen_type_node, pchar1_type_node); | |
2334 | ||
b44437b9 | 2335 | gfor_fndecl_select_string = |
2336 | gfc_build_library_function_decl (get_identifier (PREFIX("select_string")), | |
2337 | integer_type_node, 4, pvoid_type_node, | |
2338 | integer_type_node, pchar1_type_node, | |
2339 | gfc_charlen_type_node); | |
2340 | ||
40b806de | 2341 | gfor_fndecl_compare_string_char4 = |
2342 | gfc_build_library_function_decl (get_identifier | |
2343 | (PREFIX("compare_string_char4")), | |
2344 | integer_type_node, 4, | |
2345 | gfc_charlen_type_node, pchar4_type_node, | |
2346 | gfc_charlen_type_node, pchar4_type_node); | |
2347 | ||
2348 | gfor_fndecl_concat_string_char4 = | |
2349 | gfc_build_library_function_decl (get_identifier | |
2350 | (PREFIX("concat_string_char4")), | |
2351 | void_type_node, 6, | |
2352 | gfc_charlen_type_node, pchar4_type_node, | |
2353 | gfc_charlen_type_node, pchar4_type_node, | |
2354 | gfc_charlen_type_node, pchar4_type_node); | |
2355 | ||
2356 | gfor_fndecl_string_len_trim_char4 = | |
2357 | gfc_build_library_function_decl (get_identifier | |
2358 | (PREFIX("string_len_trim_char4")), | |
2359 | gfc_charlen_type_node, 2, | |
2360 | gfc_charlen_type_node, pchar4_type_node); | |
2361 | ||
2362 | gfor_fndecl_string_index_char4 = | |
2363 | gfc_build_library_function_decl (get_identifier | |
2364 | (PREFIX("string_index_char4")), | |
2365 | gfc_charlen_type_node, 5, | |
2366 | gfc_charlen_type_node, pchar4_type_node, | |
2367 | gfc_charlen_type_node, pchar4_type_node, | |
2368 | gfc_logical4_type_node); | |
2369 | ||
2370 | gfor_fndecl_string_scan_char4 = | |
2371 | gfc_build_library_function_decl (get_identifier | |
2372 | (PREFIX("string_scan_char4")), | |
2373 | gfc_charlen_type_node, 5, | |
2374 | gfc_charlen_type_node, pchar4_type_node, | |
2375 | gfc_charlen_type_node, pchar4_type_node, | |
2376 | gfc_logical4_type_node); | |
2377 | ||
2378 | gfor_fndecl_string_verify_char4 = | |
2379 | gfc_build_library_function_decl (get_identifier | |
2380 | (PREFIX("string_verify_char4")), | |
2381 | gfc_charlen_type_node, 5, | |
2382 | gfc_charlen_type_node, pchar4_type_node, | |
2383 | gfc_charlen_type_node, pchar4_type_node, | |
2384 | gfc_logical4_type_node); | |
2385 | ||
2386 | gfor_fndecl_string_trim_char4 = | |
2387 | gfc_build_library_function_decl (get_identifier | |
2388 | (PREFIX("string_trim_char4")), | |
2389 | void_type_node, 4, | |
2390 | build_pointer_type (gfc_charlen_type_node), | |
2391 | build_pointer_type (pchar4_type_node), | |
2392 | gfc_charlen_type_node, pchar4_type_node); | |
2393 | ||
2394 | gfor_fndecl_string_minmax_char4 = | |
2395 | gfc_build_library_function_decl (get_identifier | |
2396 | (PREFIX("string_minmax_char4")), | |
2397 | void_type_node, -4, | |
2398 | build_pointer_type (gfc_charlen_type_node), | |
2399 | build_pointer_type (pchar4_type_node), | |
2400 | integer_type_node, integer_type_node); | |
2401 | ||
2402 | gfor_fndecl_adjustl_char4 = | |
2403 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustl_char4")), | |
2404 | void_type_node, 3, pchar4_type_node, | |
2405 | gfc_charlen_type_node, pchar4_type_node); | |
2406 | ||
2407 | gfor_fndecl_adjustr_char4 = | |
2408 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustr_char4")), | |
2409 | void_type_node, 3, pchar4_type_node, | |
2410 | gfc_charlen_type_node, pchar4_type_node); | |
2411 | ||
b44437b9 | 2412 | gfor_fndecl_select_string_char4 = |
2413 | gfc_build_library_function_decl (get_identifier | |
2414 | (PREFIX("select_string_char4")), | |
2415 | integer_type_node, 4, pvoid_type_node, | |
2416 | integer_type_node, pvoid_type_node, | |
2417 | gfc_charlen_type_node); | |
2418 | ||
2419 | ||
2420 | /* Conversion between character kinds. */ | |
2421 | ||
2422 | gfor_fndecl_convert_char1_to_char4 = | |
2423 | gfc_build_library_function_decl (get_identifier | |
2424 | (PREFIX("convert_char1_to_char4")), | |
2425 | void_type_node, 3, | |
2426 | build_pointer_type (pchar4_type_node), | |
2427 | gfc_charlen_type_node, pchar1_type_node); | |
2428 | ||
2429 | gfor_fndecl_convert_char4_to_char1 = | |
2430 | gfc_build_library_function_decl (get_identifier | |
2431 | (PREFIX("convert_char4_to_char1")), | |
2432 | void_type_node, 3, | |
2433 | build_pointer_type (pchar1_type_node), | |
2434 | gfc_charlen_type_node, pchar4_type_node); | |
2435 | ||
40b806de | 2436 | /* Misc. functions. */ |
5fcc6ec2 | 2437 | |
dbc97b88 | 2438 | gfor_fndecl_ttynam = |
2439 | gfc_build_library_function_decl (get_identifier (PREFIX("ttynam")), | |
2440 | void_type_node, | |
2441 | 3, | |
2442 | pchar_type_node, | |
2443 | gfc_charlen_type_node, | |
36c921b9 | 2444 | integer_type_node); |
dbc97b88 | 2445 | |
b902b078 | 2446 | gfor_fndecl_fdate = |
2447 | gfc_build_library_function_decl (get_identifier (PREFIX("fdate")), | |
2448 | void_type_node, | |
2449 | 2, | |
2450 | pchar_type_node, | |
2451 | gfc_charlen_type_node); | |
2452 | ||
2453 | gfor_fndecl_ctime = | |
2454 | gfc_build_library_function_decl (get_identifier (PREFIX("ctime")), | |
2455 | void_type_node, | |
2456 | 3, | |
2457 | pchar_type_node, | |
2458 | gfc_charlen_type_node, | |
2459 | gfc_int8_type_node); | |
2460 | ||
59e2a584 | 2461 | gfor_fndecl_sc_kind = |
2462 | gfc_build_library_function_decl (get_identifier | |
2463 | (PREFIX("selected_char_kind")), | |
2464 | gfc_int4_type_node, 2, | |
2465 | gfc_charlen_type_node, pchar_type_node); | |
2466 | ||
4ee9c684 | 2467 | gfor_fndecl_si_kind = |
17000b91 | 2468 | gfc_build_library_function_decl (get_identifier |
2469 | (PREFIX("selected_int_kind")), | |
59e2a584 | 2470 | gfc_int4_type_node, 1, pvoid_type_node); |
4ee9c684 | 2471 | |
2472 | gfor_fndecl_sr_kind = | |
5b11d932 | 2473 | gfc_build_library_function_decl (get_identifier |
17000b91 | 2474 | (PREFIX("selected_real_kind")), |
59e2a584 | 2475 | gfc_int4_type_node, 2, |
2476 | pvoid_type_node, pvoid_type_node); | |
4ee9c684 | 2477 | |
4ee9c684 | 2478 | /* Power functions. */ |
76834664 | 2479 | { |
920e54ef | 2480 | tree ctype, rtype, itype, jtype; |
2481 | int rkind, ikind, jkind; | |
2482 | #define NIKINDS 3 | |
2483 | #define NRKINDS 4 | |
2484 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
2485 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
2486 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
2487 | ||
2488 | for (ikind=0; ikind < NIKINDS; ikind++) | |
76834664 | 2489 | { |
920e54ef | 2490 | itype = gfc_get_int_type (ikinds[ikind]); |
2491 | ||
2492 | for (jkind=0; jkind < NIKINDS; jkind++) | |
2493 | { | |
2494 | jtype = gfc_get_int_type (ikinds[jkind]); | |
2495 | if (itype && jtype) | |
2496 | { | |
2497 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
2498 | ikinds[jkind]); | |
2499 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
2500 | gfc_build_library_function_decl (get_identifier (name), | |
2501 | jtype, 2, jtype, itype); | |
2177d98b | 2502 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
920e54ef | 2503 | } |
2504 | } | |
2505 | ||
2506 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
76834664 | 2507 | { |
920e54ef | 2508 | rtype = gfc_get_real_type (rkinds[rkind]); |
2509 | if (rtype && itype) | |
2510 | { | |
2511 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
2512 | ikinds[ikind]); | |
2513 | gfor_fndecl_math_powi[rkind][ikind].real = | |
2514 | gfc_build_library_function_decl (get_identifier (name), | |
2515 | rtype, 2, rtype, itype); | |
2177d98b | 2516 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
920e54ef | 2517 | } |
2518 | ||
2519 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
2520 | if (ctype && itype) | |
2521 | { | |
2522 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
2523 | ikinds[ikind]); | |
2524 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
2525 | gfc_build_library_function_decl (get_identifier (name), | |
2526 | ctype, 2,ctype, itype); | |
2177d98b | 2527 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
920e54ef | 2528 | } |
76834664 | 2529 | } |
2530 | } | |
920e54ef | 2531 | #undef NIKINDS |
2532 | #undef NRKINDS | |
76834664 | 2533 | } |
2534 | ||
4ee9c684 | 2535 | gfor_fndecl_math_ishftc4 = |
2536 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc4")), | |
2537 | gfc_int4_type_node, | |
2538 | 3, gfc_int4_type_node, | |
2539 | gfc_int4_type_node, gfc_int4_type_node); | |
2540 | gfor_fndecl_math_ishftc8 = | |
2541 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc8")), | |
2542 | gfc_int8_type_node, | |
2543 | 3, gfc_int8_type_node, | |
920e54ef | 2544 | gfc_int4_type_node, gfc_int4_type_node); |
2545 | if (gfc_int16_type_node) | |
2546 | gfor_fndecl_math_ishftc16 = | |
2547 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc16")), | |
2548 | gfc_int16_type_node, 3, | |
2549 | gfc_int16_type_node, | |
2550 | gfc_int4_type_node, | |
2551 | gfc_int4_type_node); | |
2552 | ||
4e8e57b0 | 2553 | /* BLAS functions. */ |
2554 | { | |
36c921b9 | 2555 | tree pint = build_pointer_type (integer_type_node); |
4e8e57b0 | 2556 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
2557 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
2558 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
2559 | tree pz = build_pointer_type | |
2560 | (gfc_get_complex_type (gfc_default_double_kind)); | |
2561 | ||
2562 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
2563 | (get_identifier | |
2564 | (gfc_option.flag_underscoring ? "sgemm_" | |
2565 | : "sgemm"), | |
2566 | void_type_node, 15, pchar_type_node, | |
2567 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
36c921b9 | 2568 | ps, pint, ps, ps, pint, integer_type_node, |
2569 | integer_type_node); | |
4e8e57b0 | 2570 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
2571 | (get_identifier | |
2572 | (gfc_option.flag_underscoring ? "dgemm_" | |
2573 | : "dgemm"), | |
2574 | void_type_node, 15, pchar_type_node, | |
2575 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
36c921b9 | 2576 | pd, pint, pd, pd, pint, integer_type_node, |
2577 | integer_type_node); | |
4e8e57b0 | 2578 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
2579 | (get_identifier | |
2580 | (gfc_option.flag_underscoring ? "cgemm_" | |
2581 | : "cgemm"), | |
2582 | void_type_node, 15, pchar_type_node, | |
2583 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
36c921b9 | 2584 | pc, pint, pc, pc, pint, integer_type_node, |
2585 | integer_type_node); | |
4e8e57b0 | 2586 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
2587 | (get_identifier | |
2588 | (gfc_option.flag_underscoring ? "zgemm_" | |
2589 | : "zgemm"), | |
2590 | void_type_node, 15, pchar_type_node, | |
2591 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
36c921b9 | 2592 | pz, pint, pz, pz, pint, integer_type_node, |
2593 | integer_type_node); | |
4e8e57b0 | 2594 | } |
2595 | ||
4ee9c684 | 2596 | /* Other functions. */ |
2597 | gfor_fndecl_size0 = | |
2598 | gfc_build_library_function_decl (get_identifier (PREFIX("size0")), | |
2599 | gfc_array_index_type, | |
2600 | 1, pvoid_type_node); | |
2601 | gfor_fndecl_size1 = | |
2602 | gfc_build_library_function_decl (get_identifier (PREFIX("size1")), | |
2603 | gfc_array_index_type, | |
2604 | 2, pvoid_type_node, | |
2605 | gfc_array_index_type); | |
9b057c29 | 2606 | |
2607 | gfor_fndecl_iargc = | |
2608 | gfc_build_library_function_decl (get_identifier (PREFIX ("iargc")), | |
2609 | gfc_int4_type_node, | |
2610 | 0); | |
70eb4f1a | 2611 | |
2612 | if (gfc_type_for_size (128, true)) | |
2613 | { | |
2614 | tree uint128 = gfc_type_for_size (128, true); | |
2615 | ||
2616 | gfor_fndecl_clz128 = | |
2617 | gfc_build_library_function_decl (get_identifier (PREFIX ("clz128")), | |
2618 | integer_type_node, 1, uint128); | |
2619 | ||
2620 | gfor_fndecl_ctz128 = | |
2621 | gfc_build_library_function_decl (get_identifier (PREFIX ("ctz128")), | |
2622 | integer_type_node, 1, uint128); | |
2623 | } | |
4ee9c684 | 2624 | } |
2625 | ||
2626 | ||
2627 | /* Make prototypes for runtime library functions. */ | |
2628 | ||
2629 | void | |
2630 | gfc_build_builtin_function_decls (void) | |
2631 | { | |
90ba9145 | 2632 | tree gfc_int4_type_node = gfc_get_int_type (4); |
4ee9c684 | 2633 | |
2634 | gfor_fndecl_stop_numeric = | |
2635 | gfc_build_library_function_decl (get_identifier (PREFIX("stop_numeric")), | |
2636 | void_type_node, 1, gfc_int4_type_node); | |
98ccec97 | 2637 | /* Stop doesn't return. */ |
2638 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; | |
2639 | ||
4ee9c684 | 2640 | gfor_fndecl_stop_string = |
2641 | gfc_build_library_function_decl (get_identifier (PREFIX("stop_string")), | |
2642 | void_type_node, 2, pchar_type_node, | |
2643 | gfc_int4_type_node); | |
98ccec97 | 2644 | /* Stop doesn't return. */ |
2645 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; | |
4ee9c684 | 2646 | |
2647 | gfor_fndecl_pause_numeric = | |
2648 | gfc_build_library_function_decl (get_identifier (PREFIX("pause_numeric")), | |
2649 | void_type_node, 1, gfc_int4_type_node); | |
2650 | ||
2651 | gfor_fndecl_pause_string = | |
2652 | gfc_build_library_function_decl (get_identifier (PREFIX("pause_string")), | |
2653 | void_type_node, 2, pchar_type_node, | |
2654 | gfc_int4_type_node); | |
2655 | ||
4ee9c684 | 2656 | gfor_fndecl_runtime_error = |
2657 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error")), | |
399aecc1 | 2658 | void_type_node, -1, pchar_type_node); |
9c0f3811 | 2659 | /* The runtime_error function does not return. */ |
2660 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
4ee9c684 | 2661 | |
50ad5fa2 | 2662 | gfor_fndecl_runtime_error_at = |
2663 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error_at")), | |
399aecc1 | 2664 | void_type_node, -2, pchar_type_node, |
50ad5fa2 | 2665 | pchar_type_node); |
2666 | /* The runtime_error_at function does not return. */ | |
2667 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
2668 | ||
da6ffc6d | 2669 | gfor_fndecl_runtime_warning_at = |
2670 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_warning_at")), | |
2671 | void_type_node, -2, pchar_type_node, | |
2672 | pchar_type_node); | |
50ad5fa2 | 2673 | gfor_fndecl_generate_error = |
2674 | gfc_build_library_function_decl (get_identifier (PREFIX("generate_error")), | |
2675 | void_type_node, 3, pvoid_type_node, | |
36c921b9 | 2676 | integer_type_node, pchar_type_node); |
50ad5fa2 | 2677 | |
9915365e | 2678 | gfor_fndecl_os_error = |
2679 | gfc_build_library_function_decl (get_identifier (PREFIX("os_error")), | |
2680 | void_type_node, 1, pchar_type_node); | |
2681 | /* The runtime_error function does not return. */ | |
2682 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
2683 | ||
7257a5d2 | 2684 | gfor_fndecl_set_args = |
2685 | gfc_build_library_function_decl (get_identifier (PREFIX("set_args")), | |
2686 | void_type_node, 2, integer_type_node, | |
2687 | build_pointer_type (pchar_type_node)); | |
2688 | ||
8c84a5de | 2689 | gfor_fndecl_set_fpe = |
2690 | gfc_build_library_function_decl (get_identifier (PREFIX("set_fpe")), | |
36c921b9 | 2691 | void_type_node, 1, integer_type_node); |
8c84a5de | 2692 | |
56c7c2d7 | 2693 | /* Keep the array dimension in sync with the call, later in this file. */ |
2694 | gfor_fndecl_set_options = | |
2695 | gfc_build_library_function_decl (get_identifier (PREFIX("set_options")), | |
36c921b9 | 2696 | void_type_node, 2, integer_type_node, |
7257a5d2 | 2697 | build_pointer_type (integer_type_node)); |
64fc3c4c | 2698 | |
15774a8b | 2699 | gfor_fndecl_set_convert = |
2700 | gfc_build_library_function_decl (get_identifier (PREFIX("set_convert")), | |
36c921b9 | 2701 | void_type_node, 1, integer_type_node); |
15774a8b | 2702 | |
f23886ab | 2703 | gfor_fndecl_set_record_marker = |
2704 | gfc_build_library_function_decl (get_identifier (PREFIX("set_record_marker")), | |
36c921b9 | 2705 | void_type_node, 1, integer_type_node); |
f23886ab | 2706 | |
bbaaa7b1 | 2707 | gfor_fndecl_set_max_subrecord_length = |
2708 | gfc_build_library_function_decl (get_identifier (PREFIX("set_max_subrecord_length")), | |
36c921b9 | 2709 | void_type_node, 1, integer_type_node); |
bbaaa7b1 | 2710 | |
4ee9c684 | 2711 | gfor_fndecl_in_pack = gfc_build_library_function_decl ( |
2712 | get_identifier (PREFIX("internal_pack")), | |
2713 | pvoid_type_node, 1, pvoid_type_node); | |
2714 | ||
2715 | gfor_fndecl_in_unpack = gfc_build_library_function_decl ( | |
2716 | get_identifier (PREFIX("internal_unpack")), | |
8b8484b4 | 2717 | void_type_node, 2, pvoid_type_node, pvoid_type_node); |
4ee9c684 | 2718 | |
2719 | gfor_fndecl_associated = | |
2720 | gfc_build_library_function_decl ( | |
2721 | get_identifier (PREFIX("associated")), | |
c1c66d1d | 2722 | integer_type_node, 2, ppvoid_type_node, |
4ee9c684 | 2723 | ppvoid_type_node); |
2724 | ||
2725 | gfc_build_intrinsic_function_decls (); | |
2726 | gfc_build_intrinsic_lib_fndecls (); | |
2727 | gfc_build_io_library_fndecls (); | |
2728 | } | |
2729 | ||
2730 | ||
231e961a | 2731 | /* Evaluate the length of dummy character variables. */ |
4ee9c684 | 2732 | |
2733 | static tree | |
d4163395 | 2734 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, tree fnbody) |
4ee9c684 | 2735 | { |
2736 | stmtblock_t body; | |
2737 | ||
b9c7fce7 | 2738 | gfc_finish_decl (cl->backend_decl); |
4ee9c684 | 2739 | |
2740 | gfc_start_block (&body); | |
2741 | ||
2742 | /* Evaluate the string length expression. */ | |
d778204a | 2743 | gfc_conv_string_length (cl, NULL, &body); |
d4163395 | 2744 | |
2745 | gfc_trans_vla_type_sizes (sym, &body); | |
2746 | ||
4ee9c684 | 2747 | gfc_add_expr_to_block (&body, fnbody); |
2748 | return gfc_finish_block (&body); | |
2749 | } | |
2750 | ||
2751 | ||
2752 | /* Allocate and cleanup an automatic character variable. */ | |
2753 | ||
2754 | static tree | |
2755 | gfc_trans_auto_character_variable (gfc_symbol * sym, tree fnbody) | |
2756 | { | |
2757 | stmtblock_t body; | |
2758 | tree decl; | |
4ee9c684 | 2759 | tree tmp; |
2760 | ||
22d678e8 | 2761 | gcc_assert (sym->backend_decl); |
2762 | gcc_assert (sym->ts.cl && sym->ts.cl->length); | |
4ee9c684 | 2763 | |
2764 | gfc_start_block (&body); | |
2765 | ||
2766 | /* Evaluate the string length expression. */ | |
d778204a | 2767 | gfc_conv_string_length (sym->ts.cl, NULL, &body); |
4ee9c684 | 2768 | |
d4163395 | 2769 | gfc_trans_vla_type_sizes (sym, &body); |
2770 | ||
4ee9c684 | 2771 | decl = sym->backend_decl; |
2772 | ||
afcf285e | 2773 | /* Emit a DECL_EXPR for this variable, which will cause the |
4b3a701c | 2774 | gimplifier to allocate storage, and all that good stuff. */ |
f75d6b8a | 2775 | tmp = fold_build1 (DECL_EXPR, TREE_TYPE (decl), decl); |
4ee9c684 | 2776 | gfc_add_expr_to_block (&body, tmp); |
afcf285e | 2777 | |
4ee9c684 | 2778 | gfc_add_expr_to_block (&body, fnbody); |
2779 | return gfc_finish_block (&body); | |
2780 | } | |
2781 | ||
c8f1568f | 2782 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
2783 | ||
2784 | static tree | |
2785 | gfc_trans_assign_aux_var (gfc_symbol * sym, tree fnbody) | |
2786 | { | |
2787 | stmtblock_t body; | |
2788 | ||
2789 | gcc_assert (sym->backend_decl); | |
2790 | gfc_start_block (&body); | |
2791 | ||
2792 | /* Set the initial value to length. See the comments in | |
2793 | function gfc_add_assign_aux_vars in this file. */ | |
75a70cf9 | 2794 | gfc_add_modify (&body, GFC_DECL_STRING_LEN (sym->backend_decl), |
c8f1568f | 2795 | build_int_cst (NULL_TREE, -2)); |
2796 | ||
2797 | gfc_add_expr_to_block (&body, fnbody); | |
2798 | return gfc_finish_block (&body); | |
2799 | } | |
2800 | ||
d4163395 | 2801 | static void |
2802 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
2803 | { | |
2804 | tree t = *tp, var, val; | |
2805 | ||
2806 | if (t == NULL || t == error_mark_node) | |
2807 | return; | |
2808 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
2809 | return; | |
2810 | ||
2811 | if (TREE_CODE (t) == SAVE_EXPR) | |
2812 | { | |
2813 | if (SAVE_EXPR_RESOLVED_P (t)) | |
2814 | { | |
2815 | *tp = TREE_OPERAND (t, 0); | |
2816 | return; | |
2817 | } | |
2818 | val = TREE_OPERAND (t, 0); | |
2819 | } | |
2820 | else | |
2821 | val = t; | |
2822 | ||
2823 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
2824 | gfc_add_decl_to_function (var); | |
75a70cf9 | 2825 | gfc_add_modify (body, var, val); |
d4163395 | 2826 | if (TREE_CODE (t) == SAVE_EXPR) |
2827 | TREE_OPERAND (t, 0) = var; | |
2828 | *tp = var; | |
2829 | } | |
2830 | ||
2831 | static void | |
2832 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
2833 | { | |
2834 | tree t; | |
2835 | ||
2836 | if (type == NULL || type == error_mark_node) | |
2837 | return; | |
2838 | ||
2839 | type = TYPE_MAIN_VARIANT (type); | |
2840 | ||
2841 | if (TREE_CODE (type) == INTEGER_TYPE) | |
2842 | { | |
2843 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
2844 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
2845 | ||
2846 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
2847 | { | |
2848 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
2849 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
2850 | } | |
2851 | } | |
2852 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
2853 | { | |
2854 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
2855 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
2856 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
2857 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
2858 | ||
2859 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
2860 | { | |
2861 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
2862 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
2863 | } | |
2864 | } | |
2865 | } | |
2866 | ||
2867 | /* Make sure all type sizes and array domains are either constant, | |
2868 | or variable or parameter decls. This is a simplified variant | |
2869 | of gimplify_type_sizes, but we can't use it here, as none of the | |
2870 | variables in the expressions have been gimplified yet. | |
2871 | As type sizes and domains for various variable length arrays | |
2872 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
2873 | time, without this routine gimplify_type_sizes in the middle-end | |
2874 | could result in the type sizes being gimplified earlier than where | |
2875 | those variables are initialized. */ | |
2876 | ||
2877 | void | |
2878 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
2879 | { | |
2880 | tree type = TREE_TYPE (sym->backend_decl); | |
2881 | ||
2882 | if (TREE_CODE (type) == FUNCTION_TYPE | |
2883 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
2884 | { | |
2885 | if (! current_fake_result_decl) | |
2886 | return; | |
2887 | ||
2888 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
2889 | } | |
2890 | ||
2891 | while (POINTER_TYPE_P (type)) | |
2892 | type = TREE_TYPE (type); | |
2893 | ||
2894 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
2895 | { | |
2896 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
2897 | ||
2898 | while (POINTER_TYPE_P (etype)) | |
2899 | etype = TREE_TYPE (etype); | |
2900 | ||
2901 | gfc_trans_vla_type_sizes_1 (etype, body); | |
2902 | } | |
2903 | ||
2904 | gfc_trans_vla_type_sizes_1 (type, body); | |
2905 | } | |
2906 | ||
4ee9c684 | 2907 | |
f0d4969f | 2908 | /* Initialize a derived type by building an lvalue from the symbol |
2909 | and using trans_assignment to do the work. */ | |
89e89e42 | 2910 | tree |
2911 | gfc_init_default_dt (gfc_symbol * sym, tree body) | |
87114d2e | 2912 | { |
2913 | stmtblock_t fnblock; | |
f0d4969f | 2914 | gfc_expr *e; |
87114d2e | 2915 | tree tmp; |
2916 | tree present; | |
2917 | ||
2918 | gfc_init_block (&fnblock); | |
f0d4969f | 2919 | gcc_assert (!sym->attr.allocatable); |
2920 | gfc_set_sym_referenced (sym); | |
2921 | e = gfc_lval_expr_from_sym (sym); | |
2922 | tmp = gfc_trans_assignment (e, sym->value, false); | |
2923 | if (sym->attr.dummy) | |
87114d2e | 2924 | { |
f0d4969f | 2925 | present = gfc_conv_expr_present (sym); |
2926 | tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present, | |
e60a6f7b | 2927 | tmp, build_empty_stmt (input_location)); |
87114d2e | 2928 | } |
f0d4969f | 2929 | gfc_add_expr_to_block (&fnblock, tmp); |
2930 | gfc_free_expr (e); | |
89e89e42 | 2931 | if (body) |
2932 | gfc_add_expr_to_block (&fnblock, body); | |
87114d2e | 2933 | return gfc_finish_block (&fnblock); |
2934 | } | |
2935 | ||
2936 | ||
8714fc76 | 2937 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
2938 | them their default initializer, if they do not have allocatable | |
2939 | components, they have their allocatable components deallocated. */ | |
2940 | ||
f0d4969f | 2941 | static tree |
2942 | init_intent_out_dt (gfc_symbol * proc_sym, tree body) | |
2943 | { | |
2944 | stmtblock_t fnblock; | |
2945 | gfc_formal_arglist *f; | |
8714fc76 | 2946 | tree tmp; |
5907c3ea | 2947 | tree present; |
f0d4969f | 2948 | |
2949 | gfc_init_block (&fnblock); | |
2950 | for (f = proc_sym->formal; f; f = f->next) | |
2951 | if (f->sym && f->sym->attr.intent == INTENT_OUT | |
8714fc76 | 2952 | && f->sym->ts.type == BT_DERIVED) |
2953 | { | |
2954 | if (f->sym->ts.derived->attr.alloc_comp) | |
2955 | { | |
2956 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.derived, | |
2957 | f->sym->backend_decl, | |
2958 | f->sym->as ? f->sym->as->rank : 0); | |
5907c3ea | 2959 | |
2960 | present = gfc_conv_expr_present (f->sym); | |
2961 | tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present, | |
e60a6f7b | 2962 | tmp, build_empty_stmt (input_location)); |
5907c3ea | 2963 | |
8714fc76 | 2964 | gfc_add_expr_to_block (&fnblock, tmp); |
2965 | } | |
2966 | ||
2967 | if (!f->sym->ts.derived->attr.alloc_comp | |
2968 | && f->sym->value) | |
2969 | body = gfc_init_default_dt (f->sym, body); | |
2970 | } | |
f0d4969f | 2971 | |
2972 | gfc_add_expr_to_block (&fnblock, body); | |
2973 | return gfc_finish_block (&fnblock); | |
2974 | } | |
2975 | ||
87114d2e | 2976 | |
4ee9c684 | 2977 | /* Generate function entry and exit code, and add it to the function body. |
2978 | This includes: | |
f888a3fb | 2979 | Allocation and initialization of array variables. |
4ee9c684 | 2980 | Allocation of character string variables. |
c8f1568f | 2981 | Initialization and possibly repacking of dummy arrays. |
2982 | Initialization of ASSIGN statement auxiliary variable. */ | |
4ee9c684 | 2983 | |
2984 | static tree | |
2985 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, tree fnbody) | |
2986 | { | |
2987 | locus loc; | |
2988 | gfc_symbol *sym; | |
d4163395 | 2989 | gfc_formal_arglist *f; |
2990 | stmtblock_t body; | |
25dd7350 | 2991 | bool seen_trans_deferred_array = false; |
4ee9c684 | 2992 | |
2993 | /* Deal with implicit return variables. Explicit return variables will | |
2994 | already have been added. */ | |
2995 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
2996 | { | |
2997 | if (!current_fake_result_decl) | |
2998 | { | |
c6871095 | 2999 | gfc_entry_list *el = NULL; |
3000 | if (proc_sym->attr.entry_master) | |
3001 | { | |
3002 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3003 | if (el->sym != el->sym->result) | |
3004 | break; | |
3005 | } | |
fa7b6574 | 3006 | /* TODO: move to the appropriate place in resolve.c. */ |
3007 | if (warn_return_type && el == NULL) | |
3008 | gfc_warning ("Return value of function '%s' at %L not set", | |
3009 | proc_sym->name, &proc_sym->declared_at); | |
4ee9c684 | 3010 | } |
c6871095 | 3011 | else if (proc_sym->as) |
4ee9c684 | 3012 | { |
d4163395 | 3013 | tree result = TREE_VALUE (current_fake_result_decl); |
3014 | fnbody = gfc_trans_dummy_array_bias (proc_sym, result, fnbody); | |
10b07432 | 3015 | |
3016 | /* An automatic character length, pointer array result. */ | |
3017 | if (proc_sym->ts.type == BT_CHARACTER | |
3018 | && TREE_CODE (proc_sym->ts.cl->backend_decl) == VAR_DECL) | |
3019 | fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.cl, | |
3020 | fnbody); | |
4ee9c684 | 3021 | } |
3022 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3023 | { | |
3024 | if (TREE_CODE (proc_sym->ts.cl->backend_decl) == VAR_DECL) | |
d4163395 | 3025 | fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.cl, |
3026 | fnbody); | |
4ee9c684 | 3027 | } |
3028 | else | |
bdaed7d2 | 3029 | gcc_assert (gfc_option.flag_f2c |
3030 | && proc_sym->ts.type == BT_COMPLEX); | |
4ee9c684 | 3031 | } |
3032 | ||
87114d2e | 3033 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3034 | should be done here so that the offsets and lbounds of arrays | |
3035 | are available. */ | |
3036 | fnbody = init_intent_out_dt (proc_sym, fnbody); | |
3037 | ||
4ee9c684 | 3038 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3039 | { | |
2294b616 | 3040 | bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED) |
3041 | && sym->ts.derived->attr.alloc_comp; | |
4ee9c684 | 3042 | if (sym->attr.dimension) |
3043 | { | |
3044 | switch (sym->as->type) | |
3045 | { | |
3046 | case AS_EXPLICIT: | |
3047 | if (sym->attr.dummy || sym->attr.result) | |
3048 | fnbody = | |
3049 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, fnbody); | |
3050 | else if (sym->attr.pointer || sym->attr.allocatable) | |
3051 | { | |
3052 | if (TREE_STATIC (sym->backend_decl)) | |
3053 | gfc_trans_static_array_pointer (sym); | |
3054 | else | |
25dd7350 | 3055 | { |
3056 | seen_trans_deferred_array = true; | |
3057 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
3058 | } | |
4ee9c684 | 3059 | } |
3060 | else | |
3061 | { | |
25dd7350 | 3062 | if (sym_has_alloc_comp) |
3063 | { | |
3064 | seen_trans_deferred_array = true; | |
3065 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
3066 | } | |
f0d4969f | 3067 | else if (sym->ts.type == BT_DERIVED |
3068 | && sym->value | |
3069 | && !sym->attr.data | |
3070 | && sym->attr.save == SAVE_NONE) | |
89e89e42 | 3071 | fnbody = gfc_init_default_dt (sym, fnbody); |
25dd7350 | 3072 | |
4ee9c684 | 3073 | gfc_get_backend_locus (&loc); |
3074 | gfc_set_backend_locus (&sym->declared_at); | |
3075 | fnbody = gfc_trans_auto_array_allocation (sym->backend_decl, | |
3076 | sym, fnbody); | |
3077 | gfc_set_backend_locus (&loc); | |
3078 | } | |
3079 | break; | |
3080 | ||
3081 | case AS_ASSUMED_SIZE: | |
3082 | /* Must be a dummy parameter. */ | |
22d678e8 | 3083 | gcc_assert (sym->attr.dummy); |
4ee9c684 | 3084 | |
3085 | /* We should always pass assumed size arrays the g77 way. */ | |
4ee9c684 | 3086 | fnbody = gfc_trans_g77_array (sym, fnbody); |
3087 | break; | |
3088 | ||
3089 | case AS_ASSUMED_SHAPE: | |
3090 | /* Must be a dummy parameter. */ | |
22d678e8 | 3091 | gcc_assert (sym->attr.dummy); |
4ee9c684 | 3092 | |
3093 | fnbody = gfc_trans_dummy_array_bias (sym, sym->backend_decl, | |
3094 | fnbody); | |
3095 | break; | |
3096 | ||
3097 | case AS_DEFERRED: | |
25dd7350 | 3098 | seen_trans_deferred_array = true; |
3099 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
4ee9c684 | 3100 | break; |
3101 | ||
3102 | default: | |
22d678e8 | 3103 | gcc_unreachable (); |
4ee9c684 | 3104 | } |
25dd7350 | 3105 | if (sym_has_alloc_comp && !seen_trans_deferred_array) |
2294b616 | 3106 | fnbody = gfc_trans_deferred_array (sym, fnbody); |
4ee9c684 | 3107 | } |
2294b616 | 3108 | else if (sym_has_alloc_comp) |
3109 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
4ee9c684 | 3110 | else if (sym->ts.type == BT_CHARACTER) |
3111 | { | |
3112 | gfc_get_backend_locus (&loc); | |
3113 | gfc_set_backend_locus (&sym->declared_at); | |
3114 | if (sym->attr.dummy || sym->attr.result) | |
d4163395 | 3115 | fnbody = gfc_trans_dummy_character (sym, sym->ts.cl, fnbody); |
4ee9c684 | 3116 | else |
3117 | fnbody = gfc_trans_auto_character_variable (sym, fnbody); | |
3118 | gfc_set_backend_locus (&loc); | |
3119 | } | |
c8f1568f | 3120 | else if (sym->attr.assign) |
3121 | { | |
3122 | gfc_get_backend_locus (&loc); | |
3123 | gfc_set_backend_locus (&sym->declared_at); | |
3124 | fnbody = gfc_trans_assign_aux_var (sym, fnbody); | |
3125 | gfc_set_backend_locus (&loc); | |
3126 | } | |
f0d4969f | 3127 | else if (sym->ts.type == BT_DERIVED |
3128 | && sym->value | |
3129 | && !sym->attr.data | |
3130 | && sym->attr.save == SAVE_NONE) | |
89e89e42 | 3131 | fnbody = gfc_init_default_dt (sym, fnbody); |
4ee9c684 | 3132 | else |
22d678e8 | 3133 | gcc_unreachable (); |
4ee9c684 | 3134 | } |
3135 | ||
d4163395 | 3136 | gfc_init_block (&body); |
3137 | ||
3138 | for (f = proc_sym->formal; f; f = f->next) | |
1e853e89 | 3139 | { |
3140 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
3141 | { | |
3142 | gcc_assert (f->sym->ts.cl->backend_decl != NULL); | |
3143 | if (TREE_CODE (f->sym->ts.cl->backend_decl) == PARM_DECL) | |
3144 | gfc_trans_vla_type_sizes (f->sym, &body); | |
3145 | } | |
1e853e89 | 3146 | } |
d4163395 | 3147 | |
3148 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
3149 | && current_fake_result_decl != NULL) | |
3150 | { | |
3151 | gcc_assert (proc_sym->ts.cl->backend_decl != NULL); | |
3152 | if (TREE_CODE (proc_sym->ts.cl->backend_decl) == PARM_DECL) | |
3153 | gfc_trans_vla_type_sizes (proc_sym, &body); | |
3154 | } | |
3155 | ||
3156 | gfc_add_expr_to_block (&body, fnbody); | |
3157 | return gfc_finish_block (&body); | |
4ee9c684 | 3158 | } |
3159 | ||
df4d540f | 3160 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
3161 | ||
3162 | /* Hash and equality functions for module_htab. */ | |
3163 | ||
3164 | static hashval_t | |
3165 | module_htab_do_hash (const void *x) | |
3166 | { | |
3167 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
3168 | } | |
3169 | ||
3170 | static int | |
3171 | module_htab_eq (const void *x1, const void *x2) | |
3172 | { | |
3173 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
3174 | (const char *)x2) == 0; | |
3175 | } | |
3176 | ||
3177 | /* Hash and equality functions for module_htab's decls. */ | |
3178 | ||
3179 | static hashval_t | |
3180 | module_htab_decls_hash (const void *x) | |
3181 | { | |
3182 | const_tree t = (const_tree) x; | |
3183 | const_tree n = DECL_NAME (t); | |
3184 | if (n == NULL_TREE) | |
3185 | n = TYPE_NAME (TREE_TYPE (t)); | |
3186 | return htab_hash_string (IDENTIFIER_POINTER (n)); | |
3187 | } | |
3188 | ||
3189 | static int | |
3190 | module_htab_decls_eq (const void *x1, const void *x2) | |
3191 | { | |
3192 | const_tree t1 = (const_tree) x1; | |
3193 | const_tree n1 = DECL_NAME (t1); | |
3194 | if (n1 == NULL_TREE) | |
3195 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
3196 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
3197 | } | |
3198 | ||
3199 | struct module_htab_entry * | |
3200 | gfc_find_module (const char *name) | |
3201 | { | |
3202 | void **slot; | |
3203 | ||
3204 | if (! module_htab) | |
3205 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
3206 | module_htab_eq, NULL); | |
3207 | ||
3208 | slot = htab_find_slot_with_hash (module_htab, name, | |
3209 | htab_hash_string (name), INSERT); | |
3210 | if (*slot == NULL) | |
3211 | { | |
3212 | struct module_htab_entry *entry = GGC_CNEW (struct module_htab_entry); | |
3213 | ||
3214 | entry->name = gfc_get_string (name); | |
3215 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
3216 | module_htab_decls_eq, NULL); | |
3217 | *slot = (void *) entry; | |
3218 | } | |
3219 | return (struct module_htab_entry *) *slot; | |
3220 | } | |
3221 | ||
3222 | void | |
3223 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
3224 | { | |
3225 | void **slot; | |
3226 | const char *name; | |
3227 | ||
3228 | if (DECL_NAME (decl)) | |
3229 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
3230 | else | |
3231 | { | |
3232 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
3233 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
3234 | } | |
3235 | slot = htab_find_slot_with_hash (entry->decls, name, | |
3236 | htab_hash_string (name), INSERT); | |
3237 | if (*slot == NULL) | |
3238 | *slot = (void *) decl; | |
3239 | } | |
3240 | ||
3241 | static struct module_htab_entry *cur_module; | |
4ee9c684 | 3242 | |
3243 | /* Output an initialized decl for a module variable. */ | |
3244 | ||
3245 | static void | |
3246 | gfc_create_module_variable (gfc_symbol * sym) | |
3247 | { | |
3248 | tree decl; | |
4ee9c684 | 3249 | |
d77f260f | 3250 | /* Module functions with alternate entries are dealt with later and |
3251 | would get caught by the next condition. */ | |
3252 | if (sym->attr.entry) | |
3253 | return; | |
3254 | ||
c5d33754 | 3255 | /* Make sure we convert the types of the derived types from iso_c_binding |
3256 | into (void *). */ | |
3257 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3258 | && sym->ts.type == BT_DERIVED) | |
3259 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
3260 | ||
df4d540f | 3261 | if (sym->attr.flavor == FL_DERIVED |
3262 | && sym->backend_decl | |
3263 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
3264 | { | |
3265 | decl = sym->backend_decl; | |
3266 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3267 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
3268 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
3269 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
3270 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
3271 | == sym->ns->proc_name->backend_decl); | |
3272 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3273 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
3274 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
3275 | } | |
3276 | ||
cf269acc | 3277 | /* Only output variables, procedure pointers and array valued, |
3278 | or derived type, parameters. */ | |
4ee9c684 | 3279 | if (sym->attr.flavor != FL_VARIABLE |
be0f1581 | 3280 | && !(sym->attr.flavor == FL_PARAMETER |
cf269acc | 3281 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
3282 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
4ee9c684 | 3283 | return; |
3284 | ||
df4d540f | 3285 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
3286 | { | |
3287 | decl = sym->backend_decl; | |
3288 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); | |
3289 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3290 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3291 | gfc_module_add_decl (cur_module, decl); | |
3292 | } | |
3293 | ||
d43a7f7f | 3294 | /* Don't generate variables from other modules. Variables from |
3295 | COMMONs will already have been generated. */ | |
3296 | if (sym->attr.use_assoc || sym->attr.in_common) | |
4ee9c684 | 3297 | return; |
3298 | ||
2b685f8e | 3299 | /* Equivalenced variables arrive here after creation. */ |
976d903a | 3300 | if (sym->backend_decl |
df4d540f | 3301 | && (sym->equiv_built || sym->attr.in_equivalence)) |
3302 | return; | |
2b685f8e | 3303 | |
4ee9c684 | 3304 | if (sym->backend_decl) |
3305 | internal_error ("backend decl for module variable %s already exists", | |
3306 | sym->name); | |
3307 | ||
3308 | /* We always want module variables to be created. */ | |
3309 | sym->attr.referenced = 1; | |
3310 | /* Create the decl. */ | |
3311 | decl = gfc_get_symbol_decl (sym); | |
3312 | ||
4ee9c684 | 3313 | /* Create the variable. */ |
3314 | pushdecl (decl); | |
df4d540f | 3315 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); |
3316 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3317 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
b2c4af5e | 3318 | rest_of_decl_compilation (decl, 1, 0); |
df4d540f | 3319 | gfc_module_add_decl (cur_module, decl); |
4ee9c684 | 3320 | |
3321 | /* Also add length of strings. */ | |
3322 | if (sym->ts.type == BT_CHARACTER) | |
3323 | { | |
3324 | tree length; | |
3325 | ||
3326 | length = sym->ts.cl->backend_decl; | |
3327 | if (!INTEGER_CST_P (length)) | |
3328 | { | |
3329 | pushdecl (length); | |
b2c4af5e | 3330 | rest_of_decl_compilation (length, 1, 0); |
4ee9c684 | 3331 | } |
3332 | } | |
3333 | } | |
3334 | ||
51d9479b | 3335 | /* Emit debug information for USE statements. */ |
df4d540f | 3336 | |
3337 | static void | |
3338 | gfc_trans_use_stmts (gfc_namespace * ns) | |
3339 | { | |
3340 | gfc_use_list *use_stmt; | |
3341 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
3342 | { | |
3343 | struct module_htab_entry *entry | |
3344 | = gfc_find_module (use_stmt->module_name); | |
3345 | gfc_use_rename *rent; | |
3346 | ||
3347 | if (entry->namespace_decl == NULL) | |
3348 | { | |
3349 | entry->namespace_decl | |
e60a6f7b | 3350 | = build_decl (input_location, |
3351 | NAMESPACE_DECL, | |
df4d540f | 3352 | get_identifier (use_stmt->module_name), |
3353 | void_type_node); | |
3354 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
3355 | } | |
51d9479b | 3356 | gfc_set_backend_locus (&use_stmt->where); |
df4d540f | 3357 | if (!use_stmt->only_flag) |
3358 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
3359 | NULL_TREE, | |
3360 | ns->proc_name->backend_decl, | |
3361 | false); | |
3362 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
3363 | { | |
3364 | tree decl, local_name; | |
3365 | void **slot; | |
3366 | ||
3367 | if (rent->op != INTRINSIC_NONE) | |
3368 | continue; | |
3369 | ||
3370 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
3371 | htab_hash_string (rent->use_name), | |
3372 | INSERT); | |
3373 | if (*slot == NULL) | |
3374 | { | |
3375 | gfc_symtree *st; | |
3376 | ||
3377 | st = gfc_find_symtree (ns->sym_root, | |
3378 | rent->local_name[0] | |
3379 | ? rent->local_name : rent->use_name); | |
3380 | gcc_assert (st && st->n.sym->attr.use_assoc); | |
51d9479b | 3381 | if (st->n.sym->backend_decl |
3382 | && DECL_P (st->n.sym->backend_decl) | |
3383 | && st->n.sym->module | |
3384 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
df4d540f | 3385 | { |
51d9479b | 3386 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
3387 | || (TREE_CODE (st->n.sym->backend_decl) | |
3388 | != VAR_DECL)); | |
df4d540f | 3389 | decl = copy_node (st->n.sym->backend_decl); |
3390 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
3391 | DECL_EXTERNAL (decl) = 1; | |
3392 | DECL_IGNORED_P (decl) = 0; | |
3393 | DECL_INITIAL (decl) = NULL_TREE; | |
3394 | } | |
3395 | else | |
3396 | { | |
3397 | *slot = error_mark_node; | |
3398 | htab_clear_slot (entry->decls, slot); | |
3399 | continue; | |
3400 | } | |
3401 | *slot = decl; | |
3402 | } | |
3403 | decl = (tree) *slot; | |
3404 | if (rent->local_name[0]) | |
3405 | local_name = get_identifier (rent->local_name); | |
3406 | else | |
3407 | local_name = NULL_TREE; | |
51d9479b | 3408 | gfc_set_backend_locus (&rent->where); |
df4d540f | 3409 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
3410 | ns->proc_name->backend_decl, | |
3411 | !use_stmt->only_flag); | |
3412 | } | |
3413 | } | |
4ee9c684 | 3414 | } |
3415 | ||
51d9479b | 3416 | |
2eb674c9 | 3417 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
3418 | will handle. */ | |
3419 | ||
3420 | static bool | |
3421 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
3422 | bool pointer) | |
3423 | { | |
3424 | gfc_constructor *c; | |
3425 | gfc_component *cm; | |
3426 | ||
3427 | if (pointer) | |
3428 | return true; | |
3429 | else if (array) | |
3430 | { | |
3431 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
3432 | return true; | |
3433 | else if (expr->expr_type == EXPR_STRUCTURE) | |
3434 | return check_constant_initializer (expr, ts, false, false); | |
3435 | else if (expr->expr_type != EXPR_ARRAY) | |
3436 | return false; | |
3437 | for (c = expr->value.constructor; c; c = c->next) | |
3438 | { | |
3439 | if (c->iterator) | |
3440 | return false; | |
3441 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
3442 | { | |
3443 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
3444 | return false; | |
3445 | } | |
3446 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
3447 | return false; | |
3448 | } | |
3449 | return true; | |
3450 | } | |
3451 | else switch (ts->type) | |
3452 | { | |
3453 | case BT_DERIVED: | |
3454 | if (expr->expr_type != EXPR_STRUCTURE) | |
3455 | return false; | |
3456 | cm = expr->ts.derived->components; | |
3457 | for (c = expr->value.constructor; c; c = c->next, cm = cm->next) | |
3458 | { | |
3459 | if (!c->expr || cm->attr.allocatable) | |
3460 | continue; | |
3461 | if (!check_constant_initializer (c->expr, &cm->ts, | |
3462 | cm->attr.dimension, | |
3463 | cm->attr.pointer)) | |
3464 | return false; | |
3465 | } | |
3466 | return true; | |
3467 | default: | |
3468 | return expr->expr_type == EXPR_CONSTANT; | |
3469 | } | |
3470 | } | |
3471 | ||
3472 | /* Emit debug info for parameters and unreferenced variables with | |
3473 | initializers. */ | |
3474 | ||
3475 | static void | |
3476 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
3477 | { | |
3478 | tree decl; | |
3479 | ||
3480 | if (sym->attr.flavor != FL_PARAMETER | |
3481 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
3482 | return; | |
3483 | ||
3484 | if (sym->backend_decl != NULL | |
3485 | || sym->value == NULL | |
3486 | || sym->attr.use_assoc | |
3487 | || sym->attr.dummy | |
3488 | || sym->attr.result | |
3489 | || sym->attr.function | |
3490 | || sym->attr.intrinsic | |
3491 | || sym->attr.pointer | |
3492 | || sym->attr.allocatable | |
3493 | || sym->attr.cray_pointee | |
3494 | || sym->attr.threadprivate | |
3495 | || sym->attr.is_bind_c | |
3496 | || sym->attr.subref_array_pointer | |
3497 | || sym->attr.assign) | |
3498 | return; | |
3499 | ||
3500 | if (sym->ts.type == BT_CHARACTER) | |
3501 | { | |
3502 | gfc_conv_const_charlen (sym->ts.cl); | |
3503 | if (sym->ts.cl->backend_decl == NULL | |
3504 | || TREE_CODE (sym->ts.cl->backend_decl) != INTEGER_CST) | |
3505 | return; | |
3506 | } | |
3507 | else if (sym->ts.type == BT_DERIVED && sym->ts.derived->attr.alloc_comp) | |
3508 | return; | |
3509 | ||
3510 | if (sym->as) | |
3511 | { | |
3512 | int n; | |
3513 | ||
3514 | if (sym->as->type != AS_EXPLICIT) | |
3515 | return; | |
3516 | for (n = 0; n < sym->as->rank; n++) | |
3517 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
3518 | || sym->as->upper[n] == NULL | |
3519 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
3520 | return; | |
3521 | } | |
3522 | ||
3523 | if (!check_constant_initializer (sym->value, &sym->ts, | |
3524 | sym->attr.dimension, false)) | |
3525 | return; | |
3526 | ||
3527 | /* Create the decl for the variable or constant. */ | |
e60a6f7b | 3528 | decl = build_decl (input_location, |
3529 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
2eb674c9 | 3530 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
3531 | if (sym->attr.flavor == FL_PARAMETER) | |
3532 | TREE_READONLY (decl) = 1; | |
3533 | gfc_set_decl_location (decl, &sym->declared_at); | |
3534 | if (sym->attr.dimension) | |
3535 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
3536 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3537 | TREE_STATIC (decl) = 1; | |
3538 | TREE_USED (decl) = 1; | |
3539 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
3540 | TREE_PUBLIC (decl) = 1; | |
3541 | DECL_INITIAL (decl) | |
3542 | = gfc_conv_initializer (sym->value, &sym->ts, TREE_TYPE (decl), | |
3543 | sym->attr.dimension, 0); | |
3544 | debug_hooks->global_decl (decl); | |
3545 | } | |
3546 | ||
51d9479b | 3547 | /* Generate all the required code for module variables. */ |
3548 | ||
3549 | void | |
3550 | gfc_generate_module_vars (gfc_namespace * ns) | |
3551 | { | |
3552 | module_namespace = ns; | |
3553 | cur_module = gfc_find_module (ns->proc_name->name); | |
3554 | ||
3555 | /* Check if the frontend left the namespace in a reasonable state. */ | |
3556 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
3557 | ||
3558 | /* Generate COMMON blocks. */ | |
3559 | gfc_trans_common (ns); | |
3560 | ||
3561 | /* Create decls for all the module variables. */ | |
3562 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
3563 | ||
3564 | cur_module = NULL; | |
3565 | ||
3566 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 3567 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
51d9479b | 3568 | } |
3569 | ||
3570 | ||
4ee9c684 | 3571 | static void |
3572 | gfc_generate_contained_functions (gfc_namespace * parent) | |
3573 | { | |
3574 | gfc_namespace *ns; | |
3575 | ||
3576 | /* We create all the prototypes before generating any code. */ | |
3577 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3578 | { | |
3579 | /* Skip namespaces from used modules. */ | |
3580 | if (ns->parent != parent) | |
3581 | continue; | |
3582 | ||
1b716045 | 3583 | gfc_create_function_decl (ns); |
4ee9c684 | 3584 | } |
3585 | ||
3586 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3587 | { | |
3588 | /* Skip namespaces from used modules. */ | |
3589 | if (ns->parent != parent) | |
3590 | continue; | |
3591 | ||
3592 | gfc_generate_function_code (ns); | |
3593 | } | |
3594 | } | |
3595 | ||
3596 | ||
d95efb59 | 3597 | /* Drill down through expressions for the array specification bounds and |
3598 | character length calling generate_local_decl for all those variables | |
3599 | that have not already been declared. */ | |
3600 | ||
3601 | static void | |
3602 | generate_local_decl (gfc_symbol *); | |
3603 | ||
1acb400a | 3604 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
d95efb59 | 3605 | |
1acb400a | 3606 | static bool |
3607 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
3608 | int *f ATTRIBUTE_UNUSED) | |
3609 | { | |
3610 | if (e->expr_type != EXPR_VARIABLE | |
3611 | || sym == e->symtree->n.sym | |
d95efb59 | 3612 | || e->symtree->n.sym->mark |
3613 | || e->symtree->n.sym->ns != sym->ns) | |
1acb400a | 3614 | return false; |
d95efb59 | 3615 | |
1acb400a | 3616 | generate_local_decl (e->symtree->n.sym); |
3617 | return false; | |
3618 | } | |
d95efb59 | 3619 | |
1acb400a | 3620 | static void |
3621 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
3622 | { | |
3623 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
d95efb59 | 3624 | } |
3625 | ||
3626 | ||
f6d0e37a | 3627 | /* Check for dependencies in the character length and array spec. */ |
d95efb59 | 3628 | |
3629 | static void | |
3630 | generate_dependency_declarations (gfc_symbol *sym) | |
3631 | { | |
3632 | int i; | |
3633 | ||
3634 | if (sym->ts.type == BT_CHARACTER | |
256a5f7b | 3635 | && sym->ts.cl |
3636 | && sym->ts.cl->length | |
3637 | && sym->ts.cl->length->expr_type != EXPR_CONSTANT) | |
d95efb59 | 3638 | generate_expr_decls (sym, sym->ts.cl->length); |
3639 | ||
3640 | if (sym->as && sym->as->rank) | |
3641 | { | |
3642 | for (i = 0; i < sym->as->rank; i++) | |
3643 | { | |
3644 | generate_expr_decls (sym, sym->as->lower[i]); | |
3645 | generate_expr_decls (sym, sym->as->upper[i]); | |
3646 | } | |
3647 | } | |
3648 | } | |
3649 | ||
3650 | ||
4ee9c684 | 3651 | /* Generate decls for all local variables. We do this to ensure correct |
3652 | handling of expressions which only appear in the specification of | |
3653 | other functions. */ | |
3654 | ||
3655 | static void | |
3656 | generate_local_decl (gfc_symbol * sym) | |
3657 | { | |
3658 | if (sym->attr.flavor == FL_VARIABLE) | |
3659 | { | |
d95efb59 | 3660 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
8714fc76 | 3661 | generate_dependency_declarations (sym); |
d95efb59 | 3662 | |
4ee9c684 | 3663 | if (sym->attr.referenced) |
8714fc76 | 3664 | gfc_get_symbol_decl (sym); |
76776e6d | 3665 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
3666 | else if (warn_unused_variable | |
3667 | && sym->attr.dummy | |
3668 | && sym->attr.intent == INTENT_OUT) | |
6ecfe89d | 3669 | gfc_warning ("Dummy argument '%s' at %L was declared INTENT(OUT) but was not set", |
76776e6d | 3670 | sym->name, &sym->declared_at); |
3671 | /* Specific warning for unused dummy arguments. */ | |
3672 | else if (warn_unused_variable && sym->attr.dummy) | |
6ecfe89d | 3673 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, |
d974cfde | 3674 | &sym->declared_at); |
f888a3fb | 3675 | /* Warn for unused variables, but not if they're inside a common |
14a3addc | 3676 | block or are use-associated. */ |
36609028 | 3677 | else if (warn_unused_variable |
fa7b6574 | 3678 | && !(sym->attr.in_common || sym->attr.use_assoc || sym->mark)) |
6ecfe89d | 3679 | gfc_warning ("Unused variable '%s' declared at %L", sym->name, |
d974cfde | 3680 | &sym->declared_at); |
8714fc76 | 3681 | |
d4163395 | 3682 | /* For variable length CHARACTER parameters, the PARM_DECL already |
3683 | references the length variable, so force gfc_get_symbol_decl | |
3684 | even when not referenced. If optimize > 0, it will be optimized | |
3685 | away anyway. But do this only after emitting -Wunused-parameter | |
3686 | warning if requested. */ | |
8714fc76 | 3687 | if (sym->attr.dummy && !sym->attr.referenced |
3688 | && sym->ts.type == BT_CHARACTER | |
3689 | && sym->ts.cl->backend_decl != NULL | |
3690 | && TREE_CODE (sym->ts.cl->backend_decl) == VAR_DECL) | |
d4163395 | 3691 | { |
3692 | sym->attr.referenced = 1; | |
3693 | gfc_get_symbol_decl (sym); | |
3694 | } | |
76776e6d | 3695 | |
8714fc76 | 3696 | /* INTENT(out) dummy arguments with allocatable components are reset |
3697 | by default and need to be set referenced to generate the code for | |
3698 | automatic lengths. */ | |
3699 | if (sym->attr.dummy && !sym->attr.referenced | |
3700 | && sym->ts.type == BT_DERIVED | |
3701 | && sym->ts.derived->attr.alloc_comp | |
3702 | && sym->attr.intent == INTENT_OUT) | |
3703 | { | |
3704 | sym->attr.referenced = 1; | |
3705 | gfc_get_symbol_decl (sym); | |
3706 | } | |
3707 | ||
3708 | ||
e72f979a | 3709 | /* Check for dependencies in the array specification and string |
3710 | length, adding the necessary declarations to the function. We | |
3711 | mark the symbol now, as well as in traverse_ns, to prevent | |
3712 | getting stuck in a circular dependency. */ | |
3713 | sym->mark = 1; | |
3714 | ||
76776e6d | 3715 | /* We do not want the middle-end to warn about unused parameters |
3716 | as this was already done above. */ | |
3717 | if (sym->attr.dummy && sym->backend_decl != NULL_TREE) | |
3718 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4ee9c684 | 3719 | } |
5dd246c1 | 3720 | else if (sym->attr.flavor == FL_PARAMETER) |
3721 | { | |
6ecfe89d | 3722 | if (warn_unused_parameter |
5dd246c1 | 3723 | && !sym->attr.referenced |
3724 | && !sym->attr.use_assoc) | |
6ecfe89d | 3725 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, |
5dd246c1 | 3726 | &sym->declared_at); |
3727 | } | |
fa7b6574 | 3728 | else if (sym->attr.flavor == FL_PROCEDURE) |
3729 | { | |
3730 | /* TODO: move to the appropriate place in resolve.c. */ | |
3731 | if (warn_return_type | |
3732 | && sym->attr.function | |
3733 | && sym->result | |
3734 | && sym != sym->result | |
3735 | && !sym->result->attr.referenced | |
3736 | && !sym->attr.use_assoc | |
3737 | && sym->attr.if_source != IFSRC_IFBODY) | |
3738 | { | |
3739 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
3740 | "%L not set", sym->result->name, sym->name, | |
3741 | &sym->result->declared_at); | |
3742 | ||
3743 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
e72f979a | 3744 | sym->result->mark = 1; |
fa7b6574 | 3745 | } |
3746 | } | |
c5d33754 | 3747 | |
19ba2ad8 | 3748 | if (sym->attr.dummy == 1) |
3749 | { | |
3750 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
3751 | procedures if they are passed by value. The tree type for them will | |
3752 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
3753 | what C would do with characters passed by-value. The value attribute | |
3754 | implies the dummy is a scalar. */ | |
3755 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
3756 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
3757 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
4c47c8b7 | 3758 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
19ba2ad8 | 3759 | } |
3760 | ||
c5d33754 | 3761 | /* Make sure we convert the types of the derived types from iso_c_binding |
3762 | into (void *). */ | |
3763 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3764 | && sym->ts.type == BT_DERIVED) | |
3765 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4ee9c684 | 3766 | } |
3767 | ||
3768 | static void | |
3769 | generate_local_vars (gfc_namespace * ns) | |
3770 | { | |
3771 | gfc_traverse_ns (ns, generate_local_decl); | |
3772 | } | |
3773 | ||
3774 | ||
1b716045 | 3775 | /* Generate a switch statement to jump to the correct entry point. Also |
3776 | creates the label decls for the entry points. */ | |
4ee9c684 | 3777 | |
1b716045 | 3778 | static tree |
3779 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
4ee9c684 | 3780 | { |
1b716045 | 3781 | stmtblock_t block; |
3782 | tree label; | |
3783 | tree tmp; | |
3784 | tree val; | |
4ee9c684 | 3785 | |
1b716045 | 3786 | gfc_init_block (&block); |
3787 | for (; el; el = el->next) | |
3788 | { | |
3789 | /* Add the case label. */ | |
b797d6d3 | 3790 | label = gfc_build_label_decl (NULL_TREE); |
7016c612 | 3791 | val = build_int_cst (gfc_array_index_type, el->id); |
ed52ef8b | 3792 | tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label); |
1b716045 | 3793 | gfc_add_expr_to_block (&block, tmp); |
5b11d932 | 3794 | |
1b716045 | 3795 | /* And jump to the actual entry point. */ |
3796 | label = gfc_build_label_decl (NULL_TREE); | |
1b716045 | 3797 | tmp = build1_v (GOTO_EXPR, label); |
3798 | gfc_add_expr_to_block (&block, tmp); | |
3799 | ||
3800 | /* Save the label decl. */ | |
3801 | el->label = label; | |
3802 | } | |
3803 | tmp = gfc_finish_block (&block); | |
3804 | /* The first argument selects the entry point. */ | |
3805 | val = DECL_ARGUMENTS (current_function_decl); | |
ed52ef8b | 3806 | tmp = build3_v (SWITCH_EXPR, val, tmp, NULL_TREE); |
1b716045 | 3807 | return tmp; |
4ee9c684 | 3808 | } |
3809 | ||
6374121b | 3810 | |
a4abf8a0 | 3811 | /* Add code to string lengths of actual arguments passed to a function against |
3812 | the expected lengths of the dummy arguments. */ | |
3813 | ||
3814 | static void | |
3815 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
3816 | { | |
3817 | gfc_formal_arglist *formal; | |
3818 | ||
3819 | for (formal = sym->formal; formal; formal = formal->next) | |
3820 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER) | |
3821 | { | |
3822 | enum tree_code comparison; | |
3823 | tree cond; | |
3824 | tree argname; | |
3825 | gfc_symbol *fsym; | |
3826 | gfc_charlen *cl; | |
3827 | const char *message; | |
3828 | ||
3829 | fsym = formal->sym; | |
3830 | cl = fsym->ts.cl; | |
3831 | ||
3832 | gcc_assert (cl); | |
3833 | gcc_assert (cl->passed_length != NULL_TREE); | |
3834 | gcc_assert (cl->backend_decl != NULL_TREE); | |
3835 | ||
3836 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
3837 | string lengths must match exactly. Otherwise, it is only required | |
be4be771 | 3838 | that the actual string length is *at least* the expected one. |
3839 | Sequence association allows for a mismatch of the string length | |
3840 | if the actual argument is (part of) an array, but only if the | |
3841 | dummy argument is an array. (See "Sequence association" in | |
3842 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
a4abf8a0 | 3843 | if (fsym->attr.pointer || fsym->attr.allocatable |
3844 | || (fsym->as && fsym->as->type == AS_ASSUMED_SHAPE)) | |
3845 | { | |
3846 | comparison = NE_EXPR; | |
3847 | message = _("Actual string length does not match the declared one" | |
3848 | " for dummy argument '%s' (%ld/%ld)"); | |
3849 | } | |
be4be771 | 3850 | else if (fsym->as && fsym->as->rank != 0) |
3851 | continue; | |
a4abf8a0 | 3852 | else |
3853 | { | |
3854 | comparison = LT_EXPR; | |
3855 | message = _("Actual string length is shorter than the declared one" | |
3856 | " for dummy argument '%s' (%ld/%ld)"); | |
3857 | } | |
3858 | ||
3859 | /* Build the condition. For optional arguments, an actual length | |
3860 | of 0 is also acceptable if the associated string is NULL, which | |
3861 | means the argument was not passed. */ | |
3862 | cond = fold_build2 (comparison, boolean_type_node, | |
3863 | cl->passed_length, cl->backend_decl); | |
3864 | if (fsym->attr.optional) | |
3865 | { | |
3866 | tree not_absent; | |
3867 | tree not_0length; | |
3868 | tree absent_failed; | |
3869 | ||
3870 | not_0length = fold_build2 (NE_EXPR, boolean_type_node, | |
3871 | cl->passed_length, | |
3872 | fold_convert (gfc_charlen_type_node, | |
3873 | integer_zero_node)); | |
3874 | not_absent = fold_build2 (NE_EXPR, boolean_type_node, | |
3875 | fsym->backend_decl, null_pointer_node); | |
3876 | ||
3877 | absent_failed = fold_build2 (TRUTH_OR_EXPR, boolean_type_node, | |
3878 | not_0length, not_absent); | |
3879 | ||
3880 | cond = fold_build2 (TRUTH_AND_EXPR, boolean_type_node, | |
3881 | cond, absent_failed); | |
3882 | } | |
3883 | ||
3884 | /* Build the runtime check. */ | |
3885 | argname = gfc_build_cstring_const (fsym->name); | |
3886 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
3887 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
3888 | message, argname, | |
3889 | fold_convert (long_integer_type_node, | |
3890 | cl->passed_length), | |
3891 | fold_convert (long_integer_type_node, | |
3892 | cl->backend_decl)); | |
3893 | } | |
3894 | } | |
3895 | ||
3896 | ||
7257a5d2 | 3897 | static void |
3898 | create_main_function (tree fndecl) | |
3899 | { | |
43702da6 | 3900 | tree old_context; |
7257a5d2 | 3901 | tree ftn_main; |
3902 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
3903 | stmtblock_t body; | |
3904 | ||
43702da6 | 3905 | old_context = current_function_decl; |
3906 | ||
3907 | if (old_context) | |
3908 | { | |
3909 | push_function_context (); | |
3910 | saved_parent_function_decls = saved_function_decls; | |
3911 | saved_function_decls = NULL_TREE; | |
3912 | } | |
3913 | ||
7257a5d2 | 3914 | /* main() function must be declared with global scope. */ |
3915 | gcc_assert (current_function_decl == NULL_TREE); | |
3916 | ||
3917 | /* Declare the function. */ | |
3918 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
3919 | build_pointer_type (pchar_type_node), | |
3920 | NULL_TREE); | |
0509d0ee | 3921 | main_identifier_node = get_identifier ("main"); |
e60a6f7b | 3922 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
3923 | main_identifier_node, tmp); | |
7257a5d2 | 3924 | DECL_EXTERNAL (ftn_main) = 0; |
3925 | TREE_PUBLIC (ftn_main) = 1; | |
3926 | TREE_STATIC (ftn_main) = 1; | |
3927 | DECL_ATTRIBUTES (ftn_main) | |
3928 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
3929 | ||
3930 | /* Setup the result declaration (for "return 0"). */ | |
e60a6f7b | 3931 | result_decl = build_decl (input_location, |
3932 | RESULT_DECL, NULL_TREE, integer_type_node); | |
7257a5d2 | 3933 | DECL_ARTIFICIAL (result_decl) = 1; |
3934 | DECL_IGNORED_P (result_decl) = 1; | |
3935 | DECL_CONTEXT (result_decl) = ftn_main; | |
3936 | DECL_RESULT (ftn_main) = result_decl; | |
3937 | ||
3938 | pushdecl (ftn_main); | |
3939 | ||
3940 | /* Get the arguments. */ | |
3941 | ||
3942 | arglist = NULL_TREE; | |
3943 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
3944 | ||
3945 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 3946 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
7257a5d2 | 3947 | DECL_CONTEXT (argc) = ftn_main; |
3948 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
3949 | TREE_READONLY (argc) = 1; | |
3950 | gfc_finish_decl (argc); | |
3951 | arglist = chainon (arglist, argc); | |
3952 | ||
3953 | typelist = TREE_CHAIN (typelist); | |
3954 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 3955 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
7257a5d2 | 3956 | DECL_CONTEXT (argv) = ftn_main; |
3957 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
3958 | TREE_READONLY (argv) = 1; | |
3959 | DECL_BY_REFERENCE (argv) = 1; | |
3960 | gfc_finish_decl (argv); | |
3961 | arglist = chainon (arglist, argv); | |
3962 | ||
3963 | DECL_ARGUMENTS (ftn_main) = arglist; | |
3964 | current_function_decl = ftn_main; | |
3965 | announce_function (ftn_main); | |
3966 | ||
3967 | rest_of_decl_compilation (ftn_main, 1, 0); | |
3968 | make_decl_rtl (ftn_main); | |
3969 | init_function_start (ftn_main); | |
3970 | pushlevel (0); | |
3971 | ||
3972 | gfc_init_block (&body); | |
3973 | ||
3974 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
3975 | ||
3976 | /* Call _gfortran_set_args (argc, argv). */ | |
43702da6 | 3977 | TREE_USED (argc) = 1; |
3978 | TREE_USED (argv) = 1; | |
389dd41b | 3979 | tmp = build_call_expr_loc (input_location, |
3980 | gfor_fndecl_set_args, 2, argc, argv); | |
7257a5d2 | 3981 | gfc_add_expr_to_block (&body, tmp); |
3982 | ||
3983 | /* Add a call to set_options to set up the runtime library Fortran | |
3984 | language standard parameters. */ | |
3985 | { | |
3986 | tree array_type, array, var; | |
3987 | ||
3988 | /* Passing a new option to the library requires four modifications: | |
3989 | + add it to the tree_cons list below | |
3990 | + change the array size in the call to build_array_type | |
3991 | + change the first argument to the library call | |
3992 | gfor_fndecl_set_options | |
3993 | + modify the library (runtime/compile_options.c)! */ | |
3994 | ||
3995 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, | |
3996 | gfc_option.warn_std), NULL_TREE); | |
3997 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, | |
3998 | gfc_option.allow_std), array); | |
3999 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, pedantic), | |
4000 | array); | |
4001 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, | |
4002 | gfc_option.flag_dump_core), array); | |
4003 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, | |
4004 | gfc_option.flag_backtrace), array); | |
4005 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, | |
4006 | gfc_option.flag_sign_zero), array); | |
4007 | ||
4008 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, | |
4009 | (gfc_option.rtcheck & GFC_RTCHECK_BOUNDS)), array); | |
4010 | ||
4011 | array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, | |
4012 | gfc_option.flag_range_check), array); | |
4013 | ||
4014 | array_type = build_array_type (integer_type_node, | |
4015 | build_index_type (build_int_cst (NULL_TREE, 7))); | |
4016 | array = build_constructor_from_list (array_type, nreverse (array)); | |
4017 | TREE_CONSTANT (array) = 1; | |
4018 | TREE_STATIC (array) = 1; | |
4019 | ||
4020 | /* Create a static variable to hold the jump table. */ | |
4021 | var = gfc_create_var (array_type, "options"); | |
4022 | TREE_CONSTANT (var) = 1; | |
4023 | TREE_STATIC (var) = 1; | |
4024 | TREE_READONLY (var) = 1; | |
4025 | DECL_INITIAL (var) = array; | |
4026 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
4027 | ||
389dd41b | 4028 | tmp = build_call_expr_loc (input_location, |
4029 | gfor_fndecl_set_options, 2, | |
7257a5d2 | 4030 | build_int_cst (integer_type_node, 8), var); |
4031 | gfc_add_expr_to_block (&body, tmp); | |
4032 | } | |
4033 | ||
4034 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
4035 | the library will raise a FPE when needed. */ | |
4036 | if (gfc_option.fpe != 0) | |
4037 | { | |
389dd41b | 4038 | tmp = build_call_expr_loc (input_location, |
4039 | gfor_fndecl_set_fpe, 1, | |
7257a5d2 | 4040 | build_int_cst (integer_type_node, |
4041 | gfc_option.fpe)); | |
4042 | gfc_add_expr_to_block (&body, tmp); | |
4043 | } | |
4044 | ||
4045 | /* If this is the main program and an -fconvert option was provided, | |
4046 | add a call to set_convert. */ | |
4047 | ||
4048 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
4049 | { | |
389dd41b | 4050 | tmp = build_call_expr_loc (input_location, |
4051 | gfor_fndecl_set_convert, 1, | |
7257a5d2 | 4052 | build_int_cst (integer_type_node, |
4053 | gfc_option.convert)); | |
4054 | gfc_add_expr_to_block (&body, tmp); | |
4055 | } | |
4056 | ||
4057 | /* If this is the main program and an -frecord-marker option was provided, | |
4058 | add a call to set_record_marker. */ | |
4059 | ||
4060 | if (gfc_option.record_marker != 0) | |
4061 | { | |
389dd41b | 4062 | tmp = build_call_expr_loc (input_location, |
4063 | gfor_fndecl_set_record_marker, 1, | |
7257a5d2 | 4064 | build_int_cst (integer_type_node, |
4065 | gfc_option.record_marker)); | |
4066 | gfc_add_expr_to_block (&body, tmp); | |
4067 | } | |
4068 | ||
4069 | if (gfc_option.max_subrecord_length != 0) | |
4070 | { | |
389dd41b | 4071 | tmp = build_call_expr_loc (input_location, |
4072 | gfor_fndecl_set_max_subrecord_length, 1, | |
7257a5d2 | 4073 | build_int_cst (integer_type_node, |
4074 | gfc_option.max_subrecord_length)); | |
4075 | gfc_add_expr_to_block (&body, tmp); | |
4076 | } | |
4077 | ||
4078 | /* Call MAIN__(). */ | |
389dd41b | 4079 | tmp = build_call_expr_loc (input_location, |
4080 | fndecl, 0); | |
7257a5d2 | 4081 | gfc_add_expr_to_block (&body, tmp); |
4082 | ||
43702da6 | 4083 | /* Mark MAIN__ as used. */ |
4084 | TREE_USED (fndecl) = 1; | |
4085 | ||
7257a5d2 | 4086 | /* "return 0". */ |
4087 | tmp = fold_build2 (MODIFY_EXPR, integer_type_node, DECL_RESULT (ftn_main), | |
4088 | build_int_cst (integer_type_node, 0)); | |
4089 | tmp = build1_v (RETURN_EXPR, tmp); | |
4090 | gfc_add_expr_to_block (&body, tmp); | |
4091 | ||
4092 | ||
4093 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
4094 | decl = getdecls (); | |
4095 | ||
4096 | /* Finish off this function and send it for code generation. */ | |
4097 | poplevel (1, 0, 1); | |
4098 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; | |
4099 | ||
4100 | DECL_SAVED_TREE (ftn_main) | |
4101 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
4102 | DECL_INITIAL (ftn_main)); | |
4103 | ||
4104 | /* Output the GENERIC tree. */ | |
4105 | dump_function (TDI_original, ftn_main); | |
4106 | ||
7257a5d2 | 4107 | cgraph_finalize_function (ftn_main, false); |
43702da6 | 4108 | |
4109 | if (old_context) | |
4110 | { | |
4111 | pop_function_context (); | |
4112 | saved_function_decls = saved_parent_function_decls; | |
4113 | } | |
4114 | current_function_decl = old_context; | |
7257a5d2 | 4115 | } |
4116 | ||
4117 | ||
4ee9c684 | 4118 | /* Generate code for a function. */ |
4119 | ||
4120 | void | |
4121 | gfc_generate_function_code (gfc_namespace * ns) | |
4122 | { | |
4123 | tree fndecl; | |
4124 | tree old_context; | |
4125 | tree decl; | |
4126 | tree tmp; | |
2294b616 | 4127 | tree tmp2; |
4ee9c684 | 4128 | stmtblock_t block; |
4129 | stmtblock_t body; | |
4130 | tree result; | |
a466adc9 | 4131 | tree recurcheckvar = NULL; |
4ee9c684 | 4132 | gfc_symbol *sym; |
2294b616 | 4133 | int rank; |
e50e62f5 | 4134 | bool is_recursive; |
4ee9c684 | 4135 | |
4136 | sym = ns->proc_name; | |
1b716045 | 4137 | |
4ee9c684 | 4138 | /* Check that the frontend isn't still using this. */ |
22d678e8 | 4139 | gcc_assert (sym->tlink == NULL); |
4ee9c684 | 4140 | sym->tlink = sym; |
4141 | ||
4142 | /* Create the declaration for functions with global scope. */ | |
4143 | if (!sym->backend_decl) | |
1b716045 | 4144 | gfc_create_function_decl (ns); |
4ee9c684 | 4145 | |
4146 | fndecl = sym->backend_decl; | |
4147 | old_context = current_function_decl; | |
4148 | ||
4149 | if (old_context) | |
4150 | { | |
4151 | push_function_context (); | |
4152 | saved_parent_function_decls = saved_function_decls; | |
4153 | saved_function_decls = NULL_TREE; | |
4154 | } | |
4155 | ||
1b716045 | 4156 | trans_function_start (sym); |
4ee9c684 | 4157 | |
e5004242 | 4158 | gfc_init_block (&block); |
4ee9c684 | 4159 | |
c6871095 | 4160 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
4161 | { | |
4162 | /* Copy length backend_decls to all entry point result | |
4163 | symbols. */ | |
4164 | gfc_entry_list *el; | |
4165 | tree backend_decl; | |
4166 | ||
4167 | gfc_conv_const_charlen (ns->proc_name->ts.cl); | |
4168 | backend_decl = ns->proc_name->result->ts.cl->backend_decl; | |
4169 | for (el = ns->entries; el; el = el->next) | |
4170 | el->sym->result->ts.cl->backend_decl = backend_decl; | |
4171 | } | |
4172 | ||
4ee9c684 | 4173 | /* Translate COMMON blocks. */ |
4174 | gfc_trans_common (ns); | |
4175 | ||
c750cc52 | 4176 | /* Null the parent fake result declaration if this namespace is |
4177 | a module function or an external procedures. */ | |
4178 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4179 | || ns->parent == NULL) | |
4180 | parent_fake_result_decl = NULL_TREE; | |
4181 | ||
2b685f8e | 4182 | gfc_generate_contained_functions (ns); |
4183 | ||
9579733e | 4184 | nonlocal_dummy_decls = NULL; |
4185 | nonlocal_dummy_decl_pset = NULL; | |
4186 | ||
4ee9c684 | 4187 | generate_local_vars (ns); |
5b11d932 | 4188 | |
c750cc52 | 4189 | /* Keep the parent fake result declaration in module functions |
4190 | or external procedures. */ | |
4191 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4192 | || ns->parent == NULL) | |
4193 | current_fake_result_decl = parent_fake_result_decl; | |
4194 | else | |
4195 | current_fake_result_decl = NULL_TREE; | |
4196 | ||
4ee9c684 | 4197 | current_function_return_label = NULL; |
4198 | ||
4199 | /* Now generate the code for the body of this function. */ | |
4200 | gfc_init_block (&body); | |
4201 | ||
e50e62f5 | 4202 | is_recursive = sym->attr.recursive |
4203 | || (sym->attr.entry_master | |
4204 | && sym->ns->entries->sym->attr.recursive); | |
4205 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) && !is_recursive) | |
a466adc9 | 4206 | { |
4207 | char * msg; | |
4208 | ||
4209 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
4210 | sym->name); | |
4211 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
4212 | TREE_STATIC (recurcheckvar) = 1; | |
4213 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
4214 | gfc_add_expr_to_block (&block, recurcheckvar); | |
4215 | gfc_trans_runtime_check (true, false, recurcheckvar, &block, | |
4216 | &sym->declared_at, msg); | |
4217 | gfc_add_modify (&block, recurcheckvar, boolean_true_node); | |
4218 | gfc_free (msg); | |
4219 | } | |
4220 | ||
4ee9c684 | 4221 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node |
4222 | && sym->attr.subroutine) | |
4223 | { | |
4224 | tree alternate_return; | |
c750cc52 | 4225 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
75a70cf9 | 4226 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
4ee9c684 | 4227 | } |
4228 | ||
1b716045 | 4229 | if (ns->entries) |
4230 | { | |
4231 | /* Jump to the correct entry point. */ | |
4232 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
4233 | gfc_add_expr_to_block (&body, tmp); | |
4234 | } | |
4235 | ||
a4abf8a0 | 4236 | /* If bounds-checking is enabled, generate code to check passed in actual |
4237 | arguments against the expected dummy argument attributes (e.g. string | |
4238 | lengths). */ | |
6ba3bda4 | 4239 | if (gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) |
a4abf8a0 | 4240 | add_argument_checking (&body, sym); |
4241 | ||
4ee9c684 | 4242 | tmp = gfc_trans_code (ns->code); |
4243 | gfc_add_expr_to_block (&body, tmp); | |
4244 | ||
4245 | /* Add a return label if needed. */ | |
4246 | if (current_function_return_label) | |
4247 | { | |
4248 | tmp = build1_v (LABEL_EXPR, current_function_return_label); | |
4249 | gfc_add_expr_to_block (&body, tmp); | |
4250 | } | |
4251 | ||
4252 | tmp = gfc_finish_block (&body); | |
4253 | /* Add code to create and cleanup arrays. */ | |
4254 | tmp = gfc_trans_deferred_vars (sym, tmp); | |
4ee9c684 | 4255 | |
4256 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) | |
4257 | { | |
14a3addc | 4258 | if (sym->attr.subroutine || sym == sym->result) |
4ee9c684 | 4259 | { |
d4163395 | 4260 | if (current_fake_result_decl != NULL) |
4261 | result = TREE_VALUE (current_fake_result_decl); | |
4262 | else | |
4263 | result = NULL_TREE; | |
4ee9c684 | 4264 | current_fake_result_decl = NULL_TREE; |
4265 | } | |
4266 | else | |
4267 | result = sym->result->backend_decl; | |
4268 | ||
2294b616 | 4269 | if (result != NULL_TREE && sym->attr.function |
4270 | && sym->ts.type == BT_DERIVED | |
091bff86 | 4271 | && sym->ts.derived->attr.alloc_comp |
4272 | && !sym->attr.pointer) | |
2294b616 | 4273 | { |
4274 | rank = sym->as ? sym->as->rank : 0; | |
4275 | tmp2 = gfc_nullify_alloc_comp (sym->ts.derived, result, rank); | |
4276 | gfc_add_expr_to_block (&block, tmp2); | |
4277 | } | |
4278 | ||
fa7b6574 | 4279 | gfc_add_expr_to_block (&block, tmp); |
4280 | ||
e50e62f5 | 4281 | /* Reset recursion-check variable. */ |
4282 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) && !is_recursive) | |
4283 | { | |
4284 | gfc_add_modify (&block, recurcheckvar, boolean_false_node); | |
4285 | recurcheckvar = NULL; | |
4286 | } | |
4287 | ||
fa7b6574 | 4288 | if (result == NULL_TREE) |
4289 | { | |
4290 | /* TODO: move to the appropriate place in resolve.c. */ | |
4291 | if (warn_return_type && !sym->attr.referenced && sym == sym->result) | |
4292 | gfc_warning ("Return value of function '%s' at %L not set", | |
4293 | sym->name, &sym->declared_at); | |
2294b616 | 4294 | |
fa7b6574 | 4295 | TREE_NO_WARNING(sym->backend_decl) = 1; |
4296 | } | |
4ee9c684 | 4297 | else |
4298 | { | |
3350e716 | 4299 | /* Set the return value to the dummy result variable. The |
4300 | types may be different for scalar default REAL functions | |
4301 | with -ff2c, therefore we have to convert. */ | |
4302 | tmp = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
f75d6b8a | 4303 | tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (tmp), |
4304 | DECL_RESULT (fndecl), tmp); | |
ed52ef8b | 4305 | tmp = build1_v (RETURN_EXPR, tmp); |
4ee9c684 | 4306 | gfc_add_expr_to_block (&block, tmp); |
4307 | } | |
4308 | } | |
2294b616 | 4309 | else |
e50e62f5 | 4310 | { |
4311 | gfc_add_expr_to_block (&block, tmp); | |
4312 | /* Reset recursion-check variable. */ | |
4313 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) && !is_recursive) | |
4314 | { | |
4315 | gfc_add_modify (&block, recurcheckvar, boolean_false_node); | |
4316 | recurcheckvar = NULL; | |
4317 | } | |
4318 | } | |
2294b616 | 4319 | |
4ee9c684 | 4320 | |
4321 | /* Add all the decls we created during processing. */ | |
4322 | decl = saved_function_decls; | |
4323 | while (decl) | |
4324 | { | |
4325 | tree next; | |
4326 | ||
4327 | next = TREE_CHAIN (decl); | |
4328 | TREE_CHAIN (decl) = NULL_TREE; | |
4329 | pushdecl (decl); | |
4330 | decl = next; | |
4331 | } | |
4332 | saved_function_decls = NULL_TREE; | |
4333 | ||
4334 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&block); | |
e5004242 | 4335 | decl = getdecls (); |
4ee9c684 | 4336 | |
4337 | /* Finish off this function and send it for code generation. */ | |
4338 | poplevel (1, 0, 1); | |
4339 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
4340 | ||
e5004242 | 4341 | DECL_SAVED_TREE (fndecl) |
4342 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4343 | DECL_INITIAL (fndecl)); | |
4344 | ||
9579733e | 4345 | if (nonlocal_dummy_decls) |
4346 | { | |
4347 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
4348 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
4349 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
4350 | nonlocal_dummy_decls = NULL; | |
4351 | nonlocal_dummy_decl_pset = NULL; | |
4352 | } | |
4353 | ||
4ee9c684 | 4354 | /* Output the GENERIC tree. */ |
4355 | dump_function (TDI_original, fndecl); | |
4356 | ||
4357 | /* Store the end of the function, so that we get good line number | |
4358 | info for the epilogue. */ | |
4359 | cfun->function_end_locus = input_location; | |
4360 | ||
4361 | /* We're leaving the context of this function, so zap cfun. | |
4362 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
4363 | tree_rest_of_compilation. */ | |
87d4aa85 | 4364 | set_cfun (NULL); |
4ee9c684 | 4365 | |
4366 | if (old_context) | |
4367 | { | |
4368 | pop_function_context (); | |
4369 | saved_function_decls = saved_parent_function_decls; | |
4370 | } | |
4371 | current_function_decl = old_context; | |
4372 | ||
4373 | if (decl_function_context (fndecl)) | |
6374121b | 4374 | /* Register this function with cgraph just far enough to get it |
4375 | added to our parent's nested function list. */ | |
4376 | (void) cgraph_node (fndecl); | |
4ee9c684 | 4377 | else |
bfec3452 | 4378 | cgraph_finalize_function (fndecl, false); |
df4d540f | 4379 | |
4380 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 4381 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
7257a5d2 | 4382 | |
4383 | if (sym->attr.is_main_program) | |
4384 | create_main_function (fndecl); | |
4ee9c684 | 4385 | } |
4386 | ||
7257a5d2 | 4387 | |
4ee9c684 | 4388 | void |
4389 | gfc_generate_constructors (void) | |
4390 | { | |
22d678e8 | 4391 | gcc_assert (gfc_static_ctors == NULL_TREE); |
4ee9c684 | 4392 | #if 0 |
4393 | tree fnname; | |
4394 | tree type; | |
4395 | tree fndecl; | |
4396 | tree decl; | |
4397 | tree tmp; | |
4398 | ||
4399 | if (gfc_static_ctors == NULL_TREE) | |
4400 | return; | |
4401 | ||
db85cc4f | 4402 | fnname = get_file_function_name ("I"); |
4ee9c684 | 4403 | type = build_function_type (void_type_node, |
4404 | gfc_chainon_list (NULL_TREE, void_type_node)); | |
4405 | ||
e60a6f7b | 4406 | fndecl = build_decl (input_location, |
4407 | FUNCTION_DECL, fnname, type); | |
4ee9c684 | 4408 | TREE_PUBLIC (fndecl) = 1; |
4409 | ||
e60a6f7b | 4410 | decl = build_decl (input_location, |
4411 | RESULT_DECL, NULL_TREE, void_type_node); | |
540edea7 | 4412 | DECL_ARTIFICIAL (decl) = 1; |
4413 | DECL_IGNORED_P (decl) = 1; | |
4ee9c684 | 4414 | DECL_CONTEXT (decl) = fndecl; |
4415 | DECL_RESULT (fndecl) = decl; | |
4416 | ||
4417 | pushdecl (fndecl); | |
4418 | ||
4419 | current_function_decl = fndecl; | |
4420 | ||
b2c4af5e | 4421 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 4422 | |
b2c4af5e | 4423 | make_decl_rtl (fndecl); |
4ee9c684 | 4424 | |
b31f705b | 4425 | init_function_start (fndecl); |
4ee9c684 | 4426 | |
4ee9c684 | 4427 | pushlevel (0); |
4428 | ||
4429 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
4430 | { | |
389dd41b | 4431 | tmp = build_call_expr_loc (input_location, |
4432 | TREE_VALUE (gfc_static_ctors), 0); | |
e60a6f7b | 4433 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
4ee9c684 | 4434 | } |
4435 | ||
e5004242 | 4436 | decl = getdecls (); |
4ee9c684 | 4437 | poplevel (1, 0, 1); |
4438 | ||
4439 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
e5004242 | 4440 | DECL_SAVED_TREE (fndecl) |
4441 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4442 | DECL_INITIAL (fndecl)); | |
4ee9c684 | 4443 | |
4444 | free_after_parsing (cfun); | |
4445 | free_after_compilation (cfun); | |
4446 | ||
6148a911 | 4447 | tree_rest_of_compilation (fndecl); |
4ee9c684 | 4448 | |
4449 | current_function_decl = NULL_TREE; | |
4450 | #endif | |
4451 | } | |
4452 | ||
9ec7c303 | 4453 | /* Translates a BLOCK DATA program unit. This means emitting the |
4454 | commons contained therein plus their initializations. We also emit | |
4455 | a globally visible symbol to make sure that each BLOCK DATA program | |
4456 | unit remains unique. */ | |
4457 | ||
4458 | void | |
4459 | gfc_generate_block_data (gfc_namespace * ns) | |
4460 | { | |
4461 | tree decl; | |
4462 | tree id; | |
4463 | ||
b31f705b | 4464 | /* Tell the backend the source location of the block data. */ |
4465 | if (ns->proc_name) | |
4466 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
4467 | else | |
4468 | gfc_set_backend_locus (&gfc_current_locus); | |
4469 | ||
4470 | /* Process the DATA statements. */ | |
9ec7c303 | 4471 | gfc_trans_common (ns); |
4472 | ||
b31f705b | 4473 | /* Create a global symbol with the mane of the block data. This is to |
4474 | generate linker errors if the same name is used twice. It is never | |
4475 | really used. */ | |
9ec7c303 | 4476 | if (ns->proc_name) |
4477 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
4478 | else | |
4479 | id = get_identifier ("__BLOCK_DATA__"); | |
4480 | ||
e60a6f7b | 4481 | decl = build_decl (input_location, |
4482 | VAR_DECL, id, gfc_array_index_type); | |
9ec7c303 | 4483 | TREE_PUBLIC (decl) = 1; |
4484 | TREE_STATIC (decl) = 1; | |
df4d540f | 4485 | DECL_IGNORED_P (decl) = 1; |
9ec7c303 | 4486 | |
4487 | pushdecl (decl); | |
4488 | rest_of_decl_compilation (decl, 1, 0); | |
4489 | } | |
4490 | ||
b549d2a5 | 4491 | |
4ee9c684 | 4492 | #include "gt-fortran-trans-decl.h" |